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• Problem with SIngleton Class

  - by zp26

  Hi, I have a prblem with my code. I have a viewController and a singleton class. When i call the method readXml and run a for my program update the UITextView. When i call the clearTextView method the program exit with EXC_BAD_ACCESS. The prblem it's the name of the variable position. This is invalid but i don't change anything between the two methods. You have an idea? My code: #import "PositionIdentifierViewController.h" #import "WriterXML.h" #import "ParserXML.h" #define timeToScan 0.1 @implementation PositionIdentifierViewController @synthesize accelerometer; @synthesize actualPosition; @synthesize actualX; @synthesize actualY; @synthesize actualZ; -(void)updateTextView:(NSString*)nomePosizione { NSString *string = [NSString stringWithFormat:@"%@",nomePosizione]; textEvent.text = [textEvent.text stringByAppendingString:@"\n"]; textEvent.text = [textEvent.text stringByAppendingString:string]; } -(IBAction)clearTextEvent{ textEvent.text = @""; //with this for my program exit for(int i=0; i<[[sharedController arrayPosition]count]; i++){ NSLog(@"sononelfor"); Position *tempPosition = [[Position alloc]init]; tempPosition = [[sharedController arrayPosition]objectAtIndex:i]; [self updateTextView:(NSString*)[tempPosition name]]; } } -(void)readXml{ if([sharedController readXml]){ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Caricamento Posizioni" message:@"Caricamento effettuato con successo" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil]; [alert show]; [alert release]; NSString *string = [NSString stringWithFormat:@"%d", [[sharedController arrayPosition]count]]; [self updateTextView:(NSString*)string]; //with only this the program is ok for(int i=0; i<[[sharedController arrayPosition]count]; i++){ NSLog(@"sononelfor"); Position *tempPosition = [[Position alloc]init]; tempPosition = [[sharedController arrayPosition]objectAtIndex:i]; [self updateTextView:(NSString*)[tempPosition name]]; } } else{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Caricamento Posizioni" message:@"Caricamento non riuscito" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil]; [alert show]; [alert release]; } } // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; sharedController = [SingletonController sharedSingletonController]; actualPosition = [[Position alloc]init]; self.accelerometer = [UIAccelerometer sharedAccelerometer]; self.accelerometer.updateInterval = timeToScan; self.accelerometer.delegate = self; actualX=0; actualY=0; actualZ=0; [self readXml]; } - (void)dealloc { [super dealloc]; [actualPosition dealloc]; [super dealloc]; } @end #import "SingletonController.h" #import "Position.h" #import "WriterXML.h" #import "ParserXML.h" #define standardSensibility 2 #define timeToScan .1 @implementation SingletonController @synthesize arrayPosition; @synthesize arrayMovement; @synthesize actualPosition; @synthesize actualMove; @synthesize stopThread; +(SingletonController*)sharedSingletonController{ static SingletonController *sharedSingletonController; @synchronized(self) { if(!sharedSingletonController){ sharedSingletonController = [[SingletonController alloc]init]; } } return sharedSingletonController; } -(BOOL)readXml{ ParserXML *newParser = [[ParserXML alloc]init]; if([newParser startParsing:(NSString*)@"filePosizioni.xml"]){ [arrayPosition addObjectsFromArray:[newParser arrayPosition]]; return TRUE; } else return FALSE; } -(id)init{ self = [super init]; if (self != nil) { arrayPosition = [[NSMutableArray alloc]init]; arrayMovement = [[NSMutableArray alloc]init]; actualPosition = [[Position alloc]init]; actualMove = [[Movement alloc]init]; stopThread = FALSE; } return self; } -(void) dealloc { [super dealloc]; } @end

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• Fluent NHibernate: mapping complex many-to-many (with additional columns) and setting fetch

  - by HackedByChinese

  I need a Fluent NHibernate mapping that will fulfill the following (if nothing else, I'll also take the appropriate NHibernate XML mapping and reverse engineer it). DETAILS I have a many-to-many relationship between two entities: Parent and Child. That is accomplished by an additional table to store the identities of the Parent and Child. However, I also need to define two additional columns on that mapping that provide more information about the relationship. This is roughly how I've defined my types, at least the relevant parts (where Entity is some base type that provides an Id property and checks for equivalence based on that Id): public class Parent : Entity { public virtual IList<ParentChildRelationship> Children { get; protected set; } public virtual void AddChildRelationship(Child child, int customerId) { var relationship = new ParentChildRelationship { CustomerId = customerId, Parent = this, Child = child }; if (Children == null) Children = new List<ParentChildRelationship>(); if (Children.Contains(relationship)) return; relationship.Sequence = Children.Count; Children.Add(relationship); } } public class Child : Entity { // child doesn't care about its relationships } public class ParentChildRelationship { public int CustomerId { get; set; } public Parent Parent { get; set; } public Child Child { get; set; } public int Sequence { get; set; } public override bool Equals(object obj) { if (ReferenceEquals(null, obj)) return false; if (ReferenceEquals(this, obj)) return true; var other = obj as ParentChildRelationship; if (return other == null) return false; return (CustomerId == other.CustomerId && Parent == other.Parent && Child == other.Child); } public override int GetHashCode() { unchecked { int result = CustomerId; result = Parent == null ? 0 : (result*397) ^ Parent.GetHashCode(); result = Child == null ? 0 : (result*397) ^ Child.GetHashCode(); return result; } } } The tables in the database look approximately like (assume primary/foreign keys and forgive syntax): create table Parent ( id int identity(1,1) not null ) create table Child ( id int identity(1,1) not null ) create table ParentChildRelationship ( customerId int not null, parent_id int not null, child_id int not null, sequence int not null ) I'm OK with Parent.Children being a lazy loaded property. However, the ParentChildRelationship should eager load ParentChildRelationship.Child. Furthermore, I want to use a Join when I eager load. The SQL, when accessing Parent.Children, NHibernate should generate an equivalent query to: SELECT * FROM ParentChildRelationship rel LEFT OUTER JOIN Child ch ON rel.child_id = ch.id WHERE parent_id = ? OK, so to do that I have mappings that look like this: ParentMap : ClassMap<Parent> { public ParentMap() { Table("Parent"); Id(c => c.Id).GeneratedBy.Identity(); HasMany(c => c.Children).KeyColumn("parent_id"); } } ChildMap : ClassMap<Child> { public ChildMap() { Table("Child"); Id(c => c.Id).GeneratedBy.Identity(); } } ParentChildRelationshipMap : ClassMap<ParentChildRelationship> { public ParentChildRelationshipMap() { Table("ParentChildRelationship"); CompositeId() .KeyProperty(c => c.CustomerId, "customerId") .KeyReference(c => c.Parent, "parent_id") .KeyReference(c => c.Child, "child_id"); Map(c => c.Sequence).Not.Nullable(); } } So, in my test if i try to get myParentRepo.Get(1).Children, it does in fact get me all the relationships and, as I access them from the relationship, the Child objects (for example, I can grab them all by doing parent.Children.Select(r => r.Child).ToList()). However, the SQL that NHibernate is generating is inefficient. When I access parent.Children, NHIbernate does a SELECT * FROM ParentChildRelationship WHERE parent_id = 1 and then a SELECT * FROM Child WHERE id = ? for each child in each relationship. I understand why NHibernate is doing this, but I can't figure out how to set up the mapping to make NHibernate query the way I mentioned above.

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• Custom filtering in Android using ArrayAdapter

  - by Alxandr

  I'm trying to filter my ListView which is populated with this ArrayAdapter: package me.alxandr.android.mymir.adapters; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.HashMap; import java.util.Iterator; import java.util.Set; import me.alxandr.android.mymir.R; import me.alxandr.android.mymir.model.Manga; import android.content.Context; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.Filter; import android.widget.SectionIndexer; import android.widget.TextView; public class MangaListAdapter extends ArrayAdapter<Manga> implements SectionIndexer { public ArrayList<Manga> items; public ArrayList<Manga> filtered; private Context context; private HashMap<String, Integer> alphaIndexer; private String[] sections = new String[0]; private Filter filter; private boolean enableSections; public MangaListAdapter(Context context, int textViewResourceId, ArrayList<Manga> items, boolean enableSections) { super(context, textViewResourceId, items); this.filtered = items; this.items = filtered; this.context = context; this.filter = new MangaNameFilter(); this.enableSections = enableSections; if(enableSections) { alphaIndexer = new HashMap<String, Integer>(); for(int i = items.size() - 1; i >= 0; i--) { Manga element = items.get(i); String firstChar = element.getName().substring(0, 1).toUpperCase(); if(firstChar.charAt(0) > 'Z' || firstChar.charAt(0) < 'A') firstChar = "@"; alphaIndexer.put(firstChar, i); } Set<String> keys = alphaIndexer.keySet(); Iterator<String> it = keys.iterator(); ArrayList<String> keyList = new ArrayList<String>(); while(it.hasNext()) keyList.add(it.next()); Collections.sort(keyList); sections = new String[keyList.size()]; keyList.toArray(sections); } } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; if(v == null) { LayoutInflater vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.mangarow, null); } Manga o = items.get(position); if(o != null) { TextView tt = (TextView) v.findViewById(R.id.MangaRow_MangaName); TextView bt = (TextView) v.findViewById(R.id.MangaRow_MangaExtra); if(tt != null) tt.setText(o.getName()); if(bt != null) bt.setText(o.getLastUpdated() + " - " + o.getLatestChapter()); if(enableSections && getSectionForPosition(position) != getSectionForPosition(position + 1)) { TextView h = (TextView) v.findViewById(R.id.MangaRow_Header); h.setText(sections[getSectionForPosition(position)]); h.setVisibility(View.VISIBLE); } else { TextView h = (TextView) v.findViewById(R.id.MangaRow_Header); h.setVisibility(View.GONE); } } return v; } @Override public void notifyDataSetInvalidated() { if(enableSections) { for (int i = items.size() - 1; i >= 0; i--) { Manga element = items.get(i); String firstChar = element.getName().substring(0, 1).toUpperCase(); if(firstChar.charAt(0) > 'Z' || firstChar.charAt(0) < 'A') firstChar = "@"; alphaIndexer.put(firstChar, i); } Set<String> keys = alphaIndexer.keySet(); Iterator<String> it = keys.iterator(); ArrayList<String> keyList = new ArrayList<String>(); while (it.hasNext()) { keyList.add(it.next()); } Collections.sort(keyList); sections = new String[keyList.size()]; keyList.toArray(sections); super.notifyDataSetInvalidated(); } } public int getPositionForSection(int section) { if(!enableSections) return 0; String letter = sections[section]; return alphaIndexer.get(letter); } public int getSectionForPosition(int position) { if(!enableSections) return 0; int prevIndex = 0; for(int i = 0; i < sections.length; i++) { if(getPositionForSection(i) > position && prevIndex <= position) { prevIndex = i; break; } prevIndex = i; } return prevIndex; } public Object[] getSections() { return sections; } @Override public Filter getFilter() { if(filter == null) filter = new MangaNameFilter(); return filter; } private class MangaNameFilter extends Filter { @Override protected FilterResults performFiltering(CharSequence constraint) { // NOTE: this function is *always* called from a background thread, and // not the UI thread. constraint = constraint.toString().toLowerCase(); FilterResults result = new FilterResults(); if(constraint != null && constraint.toString().length() > 0) { ArrayList<Manga> filt = new ArrayList<Manga>(); ArrayList<Manga> lItems = new ArrayList<Manga>(); synchronized (items) { Collections.copy(lItems, items); } for(int i = 0, l = lItems.size(); i < l; i++) { Manga m = lItems.get(i); if(m.getName().toLowerCase().contains(constraint)) filt.add(m); } result.count = filt.size(); result.values = filt; } else { synchronized(items) { result.values = items; result.count = items.size(); } } return result; } @SuppressWarnings("unchecked") @Override protected void publishResults(CharSequence constraint, FilterResults results) { // NOTE: this function is *always* called from the UI thread. filtered = (ArrayList<Manga>)results.values; notifyDataSetChanged(); } } } However, when I call filter('test') on the filter nothing happens at all (or the background-thread is run, but the list isn't filtered as far as the user conserns). How can I fix this?

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• NHibernate: Collection was modified; enumeration operation may not execute

  - by Daoming Yang

  Hi All, I'm currently struggling with this "Collection was modified; enumeration operation may not execute" issue. I have searched about this error message, and it's all related to the foreach statement. I do have the some foreach statements, but they are just simply representing the data. I did not using any remove or add inside the foreach statement. NOTE: The error randomly happens (about 4-5 times a day). The application is the MVC website. There are about 5 users operate this applications (about 150 orders a day). Could it be some another users modified the collection, and then occur this error? I have log4net setup and the settings can be found here Make sure that the controller has a parameterless public constructor I do have parameterless public constructor in AdminProductController Does anyone know why this happen and how to resolve this issue? A friend (Oskar) mentioned that "Theory: Maybe the problem is that your configuration and session factory is initialized on the first request after application restart. If a second request comes in before the first request is finished, maybe it will also try to initialize and then triggering this problem somehow." Many thanks. Daoming Here is the error message: System.InvalidOperationException Collection was modified; enumeration operation may not execute. System.InvalidOperationException: An error occurred when trying to create a controller of type 'WebController.Controllers.Admin.AdminProductController'. Make sure that the controller has a parameterless public constructor. --- System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. --- NHibernate.MappingException: Could not configure datastore from input stream DomainModel.Entities.Mappings.OrderProductVariant.hbm.xml --- System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.Collections.ArrayList.ArrayListEnumeratorSimple.MoveNext() at System.Xml.Schema.XmlSchemaSet.AddSchemaToSet(XmlSchema schema) at System.Xml.Schema.XmlSchemaSet.Add(String targetNamespace, XmlSchema schema) at System.Xml.Schema.XmlSchemaSet.Add(XmlSchema schema) at NHibernate.Cfg.Configuration.LoadMappingDocument(XmlReader hbmReader, String name) at NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream, String name) --- End of inner exception stack trace --- at NHibernate.Cfg.Configuration.LogAndThrow(Exception exception) at NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream, String name) at NHibernate.Cfg.Configuration.AddResource(String path, Assembly assembly) at NHibernate.Cfg.Configuration.AddAssembly(Assembly assembly) at DomainModel.RepositoryBase..ctor() at WebController.Controllers._baseController..ctor() at WebController.Controllers.Admin.AdminProductController..ctor() at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) --- End of inner exception stack trace --- at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) at System.Activator.CreateInstance(Type type, Boolean nonPublic) at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) --- End of inner exception stack trace --- at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) at System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) at System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory) at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) UPDATE CODE: In my Global.asax.cs, I'm doing this: protected void Application_BeginRequest(object sender, EventArgs e) { ManagedWebSessionContext.Bind(HttpContext.Current, SessionManager.SessionFactory.OpenSession()); } protected void Application_EndRequest(object sender, EventArgs e) { ISession session = ManagedWebSessionContext.Unbind(HttpContext.Current, SessionManager.SessionFactory); if (session != null) { try { if (session.Transaction != null && session.Transaction.IsActive) { session.Transaction.Rollback(); } else { session.Flush(); } } finally { session.Close(); } } } In the SessionManager class, I'm doing: public class SessionManager { private readonly ISessionFactory sessionFactory; public static ISessionFactory SessionFactory { get { return Instance.sessionFactory; } } private ISessionFactory GetSessionFactory() { return sessionFactory; } public static SessionManager Instance { get { return NestedSessionManager.sessionManager; } } public static ISession OpenSession() { return Instance.GetSessionFactory().OpenSession(); } public static ISession CurrentSession { get { return Instance.GetSessionFactory().GetCurrentSession(); } } private SessionManager() { Configuration config = new Configuration().Configure(); config.AddAssembly(Assembly.GetExecutingAssembly()); sessionFactory = config.BuildSessionFactory(); } class NestedSessionManager { internal static readonly SessionManager sessionManager = new SessionManager(); } } In the Repository, I'm doing this: public IEnumerable<User> GetAll() { ICriteria criteria = SessionManager.CurrentSession.CreateCriteria(typeof(User)); return criteria.List<User>(); } In the Controller, I'm doing this: public class UserController : _baseController { IUserRoleRepository _userRoleRepository; internal static readonly ILogger log = LogManager.GetLogger(typeof(UserController)); public UserController() { _userRoleRepository = new UserRoleRepository(); } public ActionResult UserList() { var myList = _usersRepository.GetAll(); return View(myList); } }

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• Draw a Custom cell for tableview ( uitableview ) , with changed colors and separator color and width

  - by Madhup

  Hi, I want to draw the background of a UITableViewCell which has a grouped style. The problem with me is I am not able to call the -(void)drawRect:(CGRect)rect or I think it should be called programmatically... I have taken code from following link . http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view/1031593#1031593 // // CustomCellBackgroundView.h // // Created by Mike Akers on 11/21/08. // Copyright 2008 __MyCompanyName__. All rights reserved. // #import <UIKit/UIKit.h> typedef enum { CustomCellBackgroundViewPositionTop, CustomCellBackgroundViewPositionMiddle, CustomCellBackgroundViewPositionBottom, CustomCellBackgroundViewPositionSingle } CustomCellBackgroundViewPosition; @interface CustomCellBackgroundView : UIView { UIColor *borderColor; UIColor *fillColor; CustomCellBackgroundViewPosition position; } @property(nonatomic, retain) UIColor *borderColor, *fillColor; @property(nonatomic) CustomCellBackgroundViewPosition position; @end // // CustomCellBackgroundView.m // // Created by Mike Akers on 11/21/08. // Copyright 2008 __MyCompanyName__. All rights reserved. // #import "CustomCellBackgroundView.h" static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth,float ovalHeight); @implementation CustomCellBackgroundView @synthesize borderColor, fillColor, position; - (BOOL) isOpaque { return NO; } - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { // Initialization code } return self; } - (void)drawRect:(CGRect)rect { // Drawing code CGContextRef c = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(c, [fillColor CGColor]); CGContextSetStrokeColorWithColor(c, [borderColor CGColor]); CGContextSetLineWidth(c, 2.0); if (position == CustomCellBackgroundViewPositionTop) { CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny + 1; maxx = maxx - 1; maxy = maxy ; CGContextMoveToPoint(c, minx, maxy); CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, miny, maxx, maxy, ROUND_SIZE); CGContextAddLineToPoint(c, maxx, maxy); // Close the path CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } else if (position == CustomCellBackgroundViewPositionBottom) { CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny ; maxx = maxx - 1; maxy = maxy - 1; CGContextMoveToPoint(c, minx, miny); CGContextAddArcToPoint(c, minx, maxy, midx, maxy, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, maxy, maxx, miny, ROUND_SIZE); CGContextAddLineToPoint(c, maxx, miny); // Close the path CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } else if (position == CustomCellBackgroundViewPositionMiddle) { CGFloat minx = CGRectGetMinX(rect) , maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny ; maxx = maxx - 1; maxy = maxy ; CGContextMoveToPoint(c, minx, miny); CGContextAddLineToPoint(c, maxx, miny); CGContextAddLineToPoint(c, maxx, maxy); CGContextAddLineToPoint(c, minx, maxy); CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } else if (position == CustomCellBackgroundViewPositionSingle) { CGFloat minx = CGRectGetMinX(rect) , midx = CGRectGetMidX(rect), maxx = CGRectGetMaxX(rect) ; CGFloat miny = CGRectGetMinY(rect) , midy = CGRectGetMidY(rect) , maxy = CGRectGetMaxY(rect) ; minx = minx + 1; miny = miny + 1; maxx = maxx - 1; maxy = maxy - 1; CGContextMoveToPoint(c, minx, midy); CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, miny, maxx, midy, ROUND_SIZE); CGContextAddArcToPoint(c, maxx, maxy, midx, maxy, ROUND_SIZE); CGContextAddArcToPoint(c, minx, maxy, minx, midy, ROUND_SIZE); // Close the path CGContextClosePath(c); // Fill & stroke the path CGContextDrawPath(c, kCGPathFillStroke); return; } } - (void)dealloc { [borderColor release]; [fillColor release]; [super dealloc]; } @end static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth,float ovalHeight) { float fw, fh; if (ovalWidth == 0 || ovalHeight == 0) {// 1 CGContextAddRect(context, rect); return; } CGContextSaveGState(context);// 2 CGContextTranslateCTM (context, CGRectGetMinX(rect),// 3 CGRectGetMinY(rect)); CGContextScaleCTM (context, ovalWidth, ovalHeight);// 4 fw = CGRectGetWidth (rect) / ovalWidth;// 5 fh = CGRectGetHeight (rect) / ovalHeight;// 6 CGContextMoveToPoint(context, fw, fh/2); // 7 CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1);// 8 CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1);// 9 CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1);// 10 CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); // 11 CGContextClosePath(context);// 12 CGContextRestoreGState(context);// 13 } but the problem is my drawRect is not getting called automatically......... I am doing it like this. CustomCellBackgroundView *custView = [[CustomCellBackgroundView alloc] initWithFrame:CGRectMake(0,0,320,44)]; [cell setBackgroundView:custView]; [custView release]; and doing this gives me transparent cell. I tried and fought with code but could get any results. Please help me out. I am really having no idea how this code will run.

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• Using AES encryption in .NET - CryptographicException saying the padding is invalid and cannot be removed

  - by Jake Petroules

  I wrote some AES encryption code in C# and I am having trouble getting it to encrypt and decrypt properly. If I enter "test" as the passphrase and "This data must be kept secret from everyone!" I receive the following exception: System.Security.Cryptography.CryptographicException: Padding is invalid and cannot be removed. at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast) at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) at System.Security.Cryptography.CryptoStream.FlushFinalBlock() at System.Security.Cryptography.CryptoStream.Dispose(Boolean disposing) at System.IO.Stream.Close() at System.IO.Stream.Dispose() ... And if I enter something less than 16 characters I get no output. I believe I need some special handling in the encryption since AES is a block cipher, but I'm not sure exactly what that is, and I wasn't able to find any examples on the web showing how. Here is my code: using System; using System.IO; using System.Security.Cryptography; using System.Text; public static class DatabaseCrypto { public static EncryptedData Encrypt(string password, string data) { return DatabaseCrypto.Transform(true, password, data, null, null) as EncryptedData; } public static string Decrypt(string password, EncryptedData data) { return DatabaseCrypto.Transform(false, password, data.DataString, data.SaltString, data.MACString) as string; } private static object Transform(bool encrypt, string password, string data, string saltString, string macString) { using (AesManaged aes = new AesManaged()) { aes.Mode = CipherMode.CBC; aes.Padding = PaddingMode.PKCS7; int key_len = aes.KeySize / 8; int iv_len = aes.BlockSize / 8; const int salt_size = 8; const int iterations = 8192; byte[] salt = encrypt ? new Rfc2898DeriveBytes(string.Empty, salt_size).Salt : Convert.FromBase64String(saltString); byte[] bc_key = new Rfc2898DeriveBytes("BLK" + password, salt, iterations).GetBytes(key_len); byte[] iv = new Rfc2898DeriveBytes("IV" + password, salt, iterations).GetBytes(iv_len); byte[] mac_key = new Rfc2898DeriveBytes("MAC" + password, salt, iterations).GetBytes(16); aes.Key = bc_key; aes.IV = iv; byte[] rawData = encrypt ? Encoding.UTF8.GetBytes(data) : Convert.FromBase64String(data); using (ICryptoTransform transform = encrypt ? aes.CreateEncryptor() : aes.CreateDecryptor()) using (MemoryStream memoryStream = encrypt ? new MemoryStream() : new MemoryStream(rawData)) using (CryptoStream cryptoStream = new CryptoStream(memoryStream, transform, encrypt ? CryptoStreamMode.Write : CryptoStreamMode.Read)) { if (encrypt) { cryptoStream.Write(rawData, 0, rawData.Length); return new EncryptedData(salt, mac_key, memoryStream.ToArray()); } else { byte[] originalData = new byte[rawData.Length]; int count = cryptoStream.Read(originalData, 0, originalData.Length); return Encoding.UTF8.GetString(originalData, 0, count); } } } } } public class EncryptedData { public EncryptedData() { } public EncryptedData(byte[] salt, byte[] mac, byte[] data) { this.Salt = salt; this.MAC = mac; this.Data = data; } public EncryptedData(string salt, string mac, string data) { this.SaltString = salt; this.MACString = mac; this.DataString = data; } public byte[] Salt { get; set; } public string SaltString { get { return Convert.ToBase64String(this.Salt); } set { this.Salt = Convert.FromBase64String(value); } } public byte[] MAC { get; set; } public string MACString { get { return Convert.ToBase64String(this.MAC); } set { this.MAC = Convert.FromBase64String(value); } } public byte[] Data { get; set; } public string DataString { get { return Convert.ToBase64String(this.Data); } set { this.Data = Convert.FromBase64String(value); } } } static void ReadTest() { Console.WriteLine("Enter password: "); string password = Console.ReadLine(); using (StreamReader reader = new StreamReader("aes.cs.txt")) { EncryptedData enc = new EncryptedData(); enc.SaltString = reader.ReadLine(); enc.MACString = reader.ReadLine(); enc.DataString = reader.ReadLine(); Console.WriteLine("The decrypted data was: " + DatabaseCrypto.Decrypt(password, enc)); } } static void WriteTest() { Console.WriteLine("Enter data: "); string data = Console.ReadLine(); Console.WriteLine("Enter password: "); string password = Console.ReadLine(); EncryptedData enc = DatabaseCrypto.Encrypt(password, data); using (StreamWriter stream = new StreamWriter("aes.cs.txt")) { stream.WriteLine(enc.SaltString); stream.WriteLine(enc.MACString); stream.WriteLine(enc.DataString); Console.WriteLine("The encrypted data was: " + enc.DataString); } }

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• Can't focus fancybox iframe input

  - by bswinnerton

  So I'm using fancybox to load up a login iframe, and I would like it onComplete to bring focus to the username field. If someone could take a look at this code and let me know what's wrong, that'd be great. Gracias. /* Function to resize the height of the fancybox window */ (function($){ $.fn.resize = function(width, height) { if (!width || (width == "inherit")) inner_width = parent.$("#fancybox-inner").width(); if (!height || (height == "inherit")) inner_height = parent.$("#fancybox-inner").height(); inner_width = width; outer_width = (inner_width + 14); inner_height = height; outer_height = (inner_height + 14); parent.$("#fancybox-inner").css({'width':inner_width, 'height':inner_height}); parent.$("#fancybox-outer").css({'width':outer_width, 'height':outer_height}); } })(jQuery); $(document).ready(function(){ var pasturl = parent.location.href; $("a.iframe#register").fancybox({ 'transitionIn' : 'fade', 'transitionOut' : 'fade', 'speedIn' : 600, 'speedOut' : 350, 'width' : 450, 'height' : 385, 'scrolling' : 'no', 'autoScale' : false, 'autoDimensions' : false, 'overlayShow' : true, 'overlayOpacity' : 0.7, 'padding' : 7, 'hideOnContentClick': false, 'titleShow' : false, 'onStart' : function() { $.fn.resize(450,385); }, 'onComplete' : function() { $("#realname").focus(); }, 'onClosed' : function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); } }); $("a.iframe#login").fancybox({ 'transitionIn' : 'fade', 'transitionOut' : 'fade', 'speedIn' : 600, 'speedOut' : 350, 'width' : 400, 'height' : 250, 'scrolling' : 'no', 'autoScale' : false, 'overlayShow' : true, 'overlayOpacity' : 0.7, 'padding' : 7, 'hideOnContentClick': false, 'titleShow' : false, 'onStart' : function() { $.fn.resize(400,250); }, 'onComplete' : function() { $("#login_username").focus(); }, 'onClosed' : function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); } }); $("#register").click(function() { $("#login_form").hide(); $(".registertext").hide(); $.fn.resize(450,385); $("label").addClass("#register_form label"); }); $("#login").click(function() { $.fn.resize(400,250); $("label").addClass("#login_form label"); }); $("#register_form").bind("submit", function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); if ($("#realname").val().length < 1 || $("#password").val().length < 1 || $("#username").val().length < 1) { $("#no_fields").addClass("warningmsg").show().resize(inherit,405); return false; } if ($("#password").val() != $("#password2").val()) { $("#no_pass_match").addClass("errormsg").show().resize(); return false; } $.fancybox.showActivity(); $.post( "../../admin/users/create_submit.php", { realname:$('#realname').val(), email:$('#email').val(), username:$('#username').val(), password:MD5($('#password').val()), rand:Math.random() } ,function(data){ if(data == "OK"){ $(".registerbox").hide(); $.fancybox.hideActivity(); $.fn.resize(inherit,300); $("#successful_login").addClass("successfulmsg").show(); } else if(data == "user_taken"){ $.fancybox.hideActivity(); $("#user_taken").addClass("errormsg").show().resize(inherit,405); $("#username").val(""); } else { $.fancybox.hideActivity(); document.write("Well, that was weird. Give me a shout at [email protected]."); } return false; }); return false; }); $("#login_form").bind("submit", function() { $(".warningmsg").hide(); $(".errormsg").hide(); $(".successfulmsg").hide(); if ($("#login_username").val().length < 1 || $("#login_password").val().length < 1) { $("#no_fields").addClass("warningmsg").show().resize(inherit,280); return false; } $.fancybox.showActivity(); $.post( "../../admin/users/login_submit.php", { username:$('#login_username').val(), password:MD5($('#login_password').val()), rand:Math.random() } ,function(data){ if(data == "authenticated"){ $(".loginbox").hide(); $(".registertext").hide(); $.fancybox.hideActivity(); $("#successful_login").addClass("successfulmsg").show(); parent.document.location.href=pasturl; } else if(data == "no_user"){ $.fancybox.hideActivity(); $("#no_user").addClass("errormsg").show().resize(); $("#login_username").val(""); $("#login_password").val(""); } else if(data == "wrong_password"){ $.fancybox.hideActivity(); $("#wrong_password").addClass("warningmsg").show().resize(); $("#login_password").val(""); } else { $.fancybox.hideActivity(); document.write("Well, that was weird."); } return false; }); return false; }); }); And here is the HTML: <p><a class="iframe" id="login" href="/login/">Login</a></p>

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• Sending an Activation Email when a New User Registers

  - by John

  Hello, The code below is a login system that I am using. It is supposed to allow a new user to register and then send the new user an activation email. It is inserting the new user into the MySQL database, but it is not sending the activation email. Any ideas why it's not sending the activation email? Thanks in advance, John header.php: <?php //error_reporting(0); session_start(); require_once ('db_connect.inc.php'); require_once ("function.inc.php"); $seed="0dAfghRqSTgx"; $domain = "...com"; ?> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>The Sandbox - <?php echo $domain; ?></title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <link rel="stylesheet" type="text/css" href="sandbox.css"> <div class="hslogo"><a href="http://www...com/sandbox/"><img src="images/hslogo.png" alt="Example" border="0"/></a></div> </head> <body> login.php: <?php if (!isLoggedIn()) { // user is not logged in. if (isset($_POST['cmdlogin'])) { // retrieve the username and password sent from login form & check the login. if (checkLogin($_POST['username'], $_POST['password'])) { show_userbox(); } else { echo "Incorrect Login information !"; show_loginform(); } } else { // User is not logged in and has not pressed the login button // so we show him the loginform show_loginform(); } } else { // The user is already loggedin, so we show the userbox. show_userbox(); } ?> function show_loginform($disabled = false) { echo '<form name="login-form" id="login-form" method="post" action="./index.php?'.$_SERVER['QUERY_STRING'].'"> <div class="usernameformtext"><label title="Username">Username: </label></div> <div class="usernameformfield"><input tabindex="1" accesskey="u" name="username" type="text" maxlength="30" id="username" /></div> <div class="passwordformtext"><label title="Password">Password: </label></div> <div class="passwordformfield"><input tabindex="2" accesskey="p" name="password" type="password" maxlength="15" id="password" /></div> <div class="registertext"><a href="http://www...com/sandbox/register.php" title="Register">Register</a></div> <div class="lostpasswordtext"><a href="http://www...com/sandbox/lostpassword.php" title="Lost Password">Lost password?</a></div> <p class="loginbutton"><input tabindex="3" accesskey="l" type="submit" name="cmdlogin" value="Login" '; if ($disabled == true) { echo 'disabled="disabled"'; } echo ' /></p></form>'; } register.php: <?php require_once "header.php"; if (isset($_POST['register'])){ if (registerNewUser($_POST['username'], $_POST['password'], $_POST['password2'], $_POST['email'])){ echo "<div class='registration'>Thank you for registering, an email has been sent to your inbox, Please activate your account. <a href='http://www...com/sandbox/index.php'>Click here to login.</a> </div>"; }else { echo "Registration failed! Please try again."; show_registration_form(); } } else { // has not pressed the register button show_registration_form(); } ?> New User Function: function registerNewUser($username, $password, $password2, $email) { global $seed; if (!valid_username($username) || !valid_password($password) || !valid_email($email) || $password != $password2 || user_exists($username)) { return false; } $code = generate_code(20); $sql = sprintf("insert into login (username,password,email,actcode) value ('%s','%s','%s','%s')", mysql_real_escape_string($username), mysql_real_escape_string(sha1($password . $seed)) , mysql_real_escape_string($email), mysql_real_escape_string($code)); if (mysql_query($sql)) { $id = mysql_insert_id(); if (sendActivationEmail($username, $password, $id, $email, $code)) { return true; } else { return false; } } else { return false; } return false; } Send Activation Email function: function sendActivationEmail($username, $password, $uid, $email, $actcode) { global $domain; $link = "http://www.$domain/sandbox/activate.php?uid=$uid&actcode=$actcode"; $message = " Thank you for registering on http://www.$domain/, Your account information: username: $username password: $password Please click the link below to activate your account. $link Regards $domain Administration "; if (sendMail($email, "Please activate your account.", $message, "no-reply@$domain")) { return true; } else { return false; } }

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• How to print PCL Directly to the printer? Vb.net VS 2010

  - by Justin

  Good day, I've been trying to upgrade an old Print Program that prints raw pcl directly to the printer. The print program takes a PCL Mask and a PCL Batch Spool File (just pcl with page turn commands, I think) merges them and sends them off to the printer. I'm able to send to the Printer a file stream of PCL but I get mixed results and i do not understand why printing is so difficult under .net. I mean yes there is the PrintDocument class, but to print PCL... Let's just say I'm ready to detach my printer from the network and burn it a live. Here is my class PrintDirect (rather a hybrid class) Imports System Imports System.Text Imports System.Runtime.InteropServices <StructLayout(LayoutKind.Sequential)> _ Public Structure DOCINFO <MarshalAs(UnmanagedType.LPWStr)> _ Public pDocName As String <MarshalAs(UnmanagedType.LPWStr)> _ Public pOutputFile As String <MarshalAs(UnmanagedType.LPWStr)> _ Public pDataType As String End Structure 'DOCINFO Public Class PrintDirect <DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function OpenPrinter(ByVal pPrinterName As String, ByRef phPrinter As IntPtr, ByVal pDefault As Integer) As Long End Function <DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=False, CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function StartDocPrinter(ByVal hPrinter As IntPtr, ByVal Level As Integer, ByRef pDocInfo As DOCINFO) As Long End Function <DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True, CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function StartPagePrinter(ByVal hPrinter As IntPtr) As Long End Function <DllImport("winspool.drv", CharSet:=CharSet.Ansi, ExactSpelling:=True, CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function WritePrinter(ByVal hPrinter As IntPtr, ByVal data As String, ByVal buf As Integer, ByRef pcWritten As Integer) As Long End Function <DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True, CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function EndPagePrinter(ByVal hPrinter As IntPtr) As Long End Function <DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True, CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function EndDocPrinter(ByVal hPrinter As IntPtr) As Long End Function <DllImport("winspool.drv", CharSet:=CharSet.Unicode, ExactSpelling:=True, CallingConvention:=CallingConvention.StdCall)> _ Public Shared Function ClosePrinter(ByVal hPrinter As IntPtr) As Long End Function 'Helps uses to work with the printer Public Class PrintJob ''' <summary> ''' The address of the printer to print to. ''' </summary> ''' <remarks></remarks> Public PrinterName As String = "" Dim lhPrinter As New System.IntPtr() ''' <summary> ''' The object deriving from the Win32 API, Winspool.drv. ''' Use this object to overide the settings defined in the PrintJob Class. ''' </summary> ''' <remarks>Only use this when absolutly nessacary.</remarks> Public OverideDocInfo As New DOCINFO() ''' <summary> ''' The PCL Control Character or the ascii escape character. \x1b ''' </summary> ''' <remarks>ChrW(27)</remarks> Public Const PCL_Control_Character As Char = ChrW(27) ''' <summary> ''' Opens a connection to a printer, if false the connection could not be established. ''' </summary> ''' <returns></returns> ''' <remarks></remarks> Public Function OpenPrint() As Boolean Dim rtn_val As Boolean = False PrintDirect.OpenPrinter(PrinterName, lhPrinter, 0) If Not lhPrinter = 0 Then rtn_val = True End If Return rtn_val End Function ''' <summary> ''' The name of the Print Document. ''' </summary> ''' <value></value> ''' <returns></returns> ''' <remarks></remarks> Public Property DocumentName As String Get Return OverideDocInfo.pDocName End Get Set(ByVal value As String) OverideDocInfo.pDocName = value End Set End Property ''' <summary> ''' The type of Data that will be sent to the printer. ''' </summary> ''' <value>Send the print data type, usually "RAW" or "LPR". To overide use the OverideDocInfo Object</value> ''' <returns>The DataType as it was provided, if it is not part of the enumeration it is set to "UNKNOWN".</returns> ''' <remarks></remarks> Public Property DocumentDataType As PrintDataType Get Select Case OverideDocInfo.pDataType.ToUpper Case "RAW" Return PrintDataType.RAW Case "LPR" Return PrintDataType.LPR Case Else Return PrintDataType.UNKOWN End Select End Get Set(ByVal value As PrintDataType) OverideDocInfo.pDataType = [Enum].GetName(GetType(PrintDataType), value) End Set End Property Public Property DocumentOutputFile As String Get Return OverideDocInfo.pOutputFile End Get Set(ByVal value As String) OverideDocInfo.pOutputFile = value End Set End Property Enum PrintDataType UNKOWN = 0 RAW = 1 LPR = 2 End Enum ''' <summary> ''' Initializes the printing matrix ''' </summary> ''' <param name="PrintLevel">I have no idea what the hack this is...</param> ''' <remarks></remarks> Public Sub OpenDocument(Optional ByVal PrintLevel As Integer = 1) PrintDirect.StartDocPrinter(lhPrinter, PrintLevel, OverideDocInfo) End Sub ''' <summary> ''' Starts the next page. ''' </summary> ''' <remarks></remarks> Public Sub StartPage() PrintDirect.StartPagePrinter(lhPrinter) End Sub ''' <summary> ''' Writes a string to the printer, can be used to write out a section of the document at a time. ''' </summary> ''' <param name="data">The String to Send out to the Printer.</param> ''' <returns>The pcWritten as an integer, 0 may mean the writter did not write out anything.</returns> ''' <remarks>Warning the buffer is automatically created by the lenegth of the string.</remarks> Public Function WriteToPrinter(ByVal data As String) As Integer Dim pcWritten As Integer = 0 PrintDirect.WritePrinter(lhPrinter, data, data.Length - 1, pcWritten) Return pcWritten End Function Public Sub EndPage() PrintDirect.EndPagePrinter(lhPrinter) End Sub Public Sub CloseDocument() PrintDirect.EndDocPrinter(lhPrinter) End Sub Public Sub ClosePrint() PrintDirect.ClosePrinter(lhPrinter) End Sub ''' <summary> ''' Opens a connection to a printer and starts a new document. ''' </summary> ''' <returns>If false the connection could not be established. </returns> ''' <remarks></remarks> Public Function Open() As Boolean Dim rtn_val As Boolean = False rtn_val = OpenPrint() If rtn_val Then OpenDocument() End If Return rtn_val End Function ''' <summary> ''' Closes the document and closes the connection to the printer. ''' </summary> ''' <remarks></remarks> Public Sub Close() CloseDocument() ClosePrint() End Sub End Class End Class 'PrintDirect Here is how I print my file. I'm simple printing the PCL Masks, to show proof of concept. But I can't even do that. I can effectively create PCL and send it the printer without reading the file and it works fine... Plus I get mixed results with different stream reader text encoding as well. Dim pJob As New PrintDirect.PrintJob pJob.DocumentName = " test doc" pJob.DocumentDataType = PrintDirect.PrintJob.PrintDataType.RAW pJob.PrinterName = sPrinter.GetDevicePath '//This is where you'd stick your device name, sPrinter stands for Selected Printer from a dropdown (combobox). 'pJob.DocumentOutputFile = "C:\temp\test-spool.txt" If Not pJob.OpenPrint() Then MsgBox("Unable to connect to " & pJob.PrinterName, MsgBoxStyle.OkOnly, "Print Error") Exit Sub End If pJob.OpenDocument() pJob.StartPage() Dim sr As New IO.StreamReader(Me.txtFile.Text, Text.Encoding.ASCII) '//I've got best results with ASCII before, but only mized. Dim line As String = sr.ReadLine 'Fix for fly code on first run 'If line = 27 Then line = PrintDirect.PrintJob.PCL_Control_Character Do While (Not line Is Nothing) pJob.WriteToPrinter(line) line = sr.ReadLine Loop 'pJob.WriteToPrinter(ControlChars.FormFeed) pJob.EndPage() pJob.CloseDocument() sr.Close() sr.Dispose() sr = Nothing pJob.Close() I was able to get to print the mask, in the morning... now I'm getting strange printer characters scattered through 5 pages... I'm totally clueless. I must have changed something or the printer is at fault. You can access my test Check Mask, here http://kscserver.com/so/chk_mask.zip .

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• C code won't compile

  - by cc

  Please help me to understand why the following code will not compile: #include <stdio.h> //#include <iostream> //using namespace std; int main(void){ int i,k,x,y,run,e,r,s,m,count=0; char numbers[19][19]; for(i=0;i<19;i++){ for (k=0;k<19;k++){ numbers[i][k]='.'; } } void drawB(){ printf(" 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 \n"); printf ("0 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[0][0],numbers[0][1],numbers[0][2],numbers[0][3],numbers[0][4], numbers[0][5],numbers[0][6],numbers[0][7],numbers[0][8],numbers[0][9], numbers[0][10],numbers[1][11],numbers[1][12],numbers[1][13],numbers[0][14] ,numbers[0][15],numbers[0][16],numbers[0][17],numbers[0][18]); printf ("1 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[1][0],numbers[1][1],numbers[1][2],numbers[1][3],numbers[1][4], numbers[1][5],numbers[1][6],numbers[1][7],numbers[1][8],numbers[1][9], numbers[1][10],numbers[1][11],numbers[1][12],numbers[1][13],numbers[1][14] ,numbers[1][15],numbers[1][16],numbers[1][17],numbers[1][18]); printf ("2 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" numbers[2][0],numbers[2][1],numbers[2][2],numbers[2][3],numbers[2][4], numbers[2][5],numbers[2][6],numbers[2][7],numbers[2][8],numbers[2][9], numbers[2][10],numbers[2][11],numbers[2][12],numbers[2][13],numbers[2][14] ,numbers[2][15],numbers[2][16],numbers[2][17],numbers[2][18]); printf ("3 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[3][0],numbers[3][1],numbers[3][2],numbers[3][3],numbers[3][4], numbers[3][5],numbers[3][6],numbers[3][7],numbers[3][8],numbers[3][9], numbers[3][10],numbers[3][11],numbers[3][12],numbers[3][13],numbers[3][14] ,numbers[3][15],numbers[3][16],numbers[3][17],numbers[3][18]); printf ("4 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[4][0],numbers[4][1],numbers[4][2],numbers[4][3],numbers[4][4], numbers[4][5],numbers[4][6],numbers[4][7],numbers[4][8],numbers[4][9], numbers[4][10],numbers[4][11],numbers[4][12],numbers[4][13],numbers[4][14] ,numbers[4][15],numbers[4][16],numbers[4][17],numbers[4][18]); printf ("5 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[5][0],numbers[5][1],numbers[5][2],numbers[5][3],numbers[5][4], numbers[5][5],numbers[5][6],numbers[5][7],numbers[5][8],numbers[5][9], numbers[5][10],numbers[5][11],numbers[5][12],numbers[5][13],numbers[5][14] ,numbers[5][15],numbers[5][16],numbers[5][17],numbers[5][18]); printf ("6 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[6][0],numbers[6][1],numbers[6][2],numbers[6][3],numbers[6][4], numbers[6][5],numbers[6][6],numbers[6][7],numbers[6][8],numbers[6][9], numbers[6][10],numbers[6][11],numbers[6][12],numbers[6][13],numbers[6][14] ,numbers[6][15],numbers[6][16],numbers[6][17],numbers[6][18]); printf ("7 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[7][0],numbers[7][1],numbers[7][2],numbers[7][3],numbers[7][4], numbers[7][5],numbers[7][6],numbers[7][7],numbers[7][8],numbers[7][9], numbers[7][10],numbers[7][11],numbers[7][12],numbers[7][13],numbers[7][14] ,numbers[7][15],numbers[7][16],numbers[7][17],numbers[7][18]); printf ("8 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[8][0],numbers[8][1],numbers[8][2],numbers[8][3],numbers[8][4], numbers[8][5],numbers[8][6],numbers[8][7],numbers[8][8],numbers[8][9], numbers[8][10],numbers[8][11],numbers[8][12],numbers[8][13],numbers[8][14] ,numbers[8][15],numbers[8][16],numbers[8][17],numbers[8][18]); printf ("9 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[9][0],numbers[9][1],numbers[9][2],numbers[9][3],numbers[9][4], numbers[9][5],numbers[9][6],numbers[9][7],numbers[9][8],numbers[9][9], numbers[9][10],numbers[9][11],numbers[9][12],numbers[9][13],numbers[9][14] ,numbers[9][15],numbers[9][16],numbers[9][17],numbers[9][18]); printf ("0 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[10][0],numbers[10][1],numbers[10][2],numbers[10][3],numbers[10][4], numbers[10][5],numbers[10][6],numbers[10][7],numbers[10][8],numbers[10][9], numbers[10][10],numbers[10][11],numbers[10][12],numbers[10][13],numbers[10][14] ,numbers[10][15],numbers[10][16],numbers[10][17],numbers[10][18]); printf ("1 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[11][0],numbers[11][1],numbers[11][2],numbers[11][3],numbers[11][4], numbers[11][5],numbers[11][6],numbers[11][7],numbers[11][8],numbers[11][9], numbers[11][10],numbers[11][11],numbers[11][12],numbers[11][13],numbers[11][14] ,numbers[11][15],numbers[11][16],numbers[11][17],numbers[11][18]); printf ("2 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[12][0],numbers[12][1],numbers[12][2],numbers[12][3],numbers[12][4], numbers[12][5],numbers[12][6],numbers[12][7],numbers[12][8],numbers[12][9], numbers[12][10],numbers[12][11],numbers[12][12],numbers[12][13],numbers[12][14] ,numbers[12][15],numbers[12][16],numbers[12][17],numbers[12][18]); printf ("3 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[13][0],numbers[13][1],numbers[13][2],numbers[13][3],numbers[13][4], numbers[13][5],numbers[13][6],numbers[13][7],numbers[13][8],numbers[13][9], numbers[13][10],numbers[13][11],numbers[13][12],numbers[13][13],numbers[13][14] ,numbers[13][15],numbers[13][16],numbers[13][17],numbers[13][18]); printf ("4 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[14][0],numbers[14][1],numbers[14][2],numbers[14][3],numbers[14][4], numbers[14][5],numbers[14][6],numbers[14][7],numbers[14][8],numbers[14][9], numbers[14][10],numbers[14][11],numbers[14][12],numbers[14][13],numbers[14][14] ,numbers[14][15],numbers[14][16],numbers[14][17],numbers[14][18]); printf ("5 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[15][0],numbers[15][1],numbers[15][2],numbers[15][3],numbers[15][4], numbers[15][5],numbers[15][6],numbers[15][7],numbers[15][8],numbers[15][9], numbers[15][10],numbers[15][11],numbers[15][12],numbers[15][13],numbers[15][14] ,numbers[15][15],numbers[15][16],numbers[15][17],numbers[15][18]); printf ("6 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[16][0],numbers[16][1],numbers[16][2],numbers[16][3],numbers[16][4], numbers[16][5],numbers[16][6],numbers[16][7],numbers[16][8],numbers[16][9], numbers[16][10],numbers[16][11],numbers[16][12],numbers[16][13],numbers[16][14] ,numbers[16][15],numbers[16][16],numbers[16][17],numbers[16][18]); printf ("7 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[17][0],numbers[17][1],numbers[17][2],numbers[17][3],numbers[17][4], numbers[17][5],numbers[17][6],numbers[17][7],numbers[17][8],numbers[17][9], numbers[17][10],numbers[17][11],numbers[17][12],numbers[17][13],numbers[17][14] ,numbers[17][15],numbers[17][16],numbers[17][17],numbers[17][18]); printf ("8 %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c %c \n\n" ,numbers[18][0],numbers[18][1],numbers[18][2],numbers[18][3],numbers[18][4], numbers[18][5],numbers[18][6],numbers[18][7],numbers[18][8],numbers[18][9], numbers[18][10],numbers[18][11],numbers[18][12],numbers[18][13],numbers[18][14] ,numbers[18][15],numbers[18][16],numbers[18][17],numbers[18][18]); } void checkSurrounded (int x,int y){ //numbers [x-1,y-1 ] , numbers [x-1,y ] , numbers [x-1,y+1 ] //numbers [x,y-1 ] , numbers [x,y ] , numbers [x,y+1 ] //numbers [x+1,y-1, ] , numbers [x+1,y ] , numbers [x+1,y+1 ] if(numbers[x][y]=='A'){ if((numbers[x-1][y-1]=='B') && (numbers[x-1][y]=='B') && (numbers[x-1][y+1]=='B') && (numbers[x][y-1]=='B') && (numbers[x][y+1]=='B') && (numbers[x+1][y-1]=='B') && (numbers[x+1][y]=='B')){ numbers[x][y]='B';} } if(numbers[x][y]=='B'){ if((numbers[x-1][y-1]=='A') && (numbers[x-1][y]=='A') && (numbers[x-1][y+1]=='A') && (numbers[x][y-1]=='A') && (numbers[x][y+1]=='A') && (numbers[x+1][y-1]=='A') && (numbers[x+1][y]=='A')){ numbers[x][y]='A'; } } } /** void checkArea(){ //detect enemy stone //store in array //find adjacent enemy stones // store the enemy stones in the array //keep on doing this until there are no more enemy stones that are adjacent for (s=0;s<19;s++) { for (m=0;m<19;m++) { if (numbers[s][m]=='A'){ count++; } } } }//end fn void checkAdjacent(int x, int y){ if (numbers [x][y]=='A'){ if((numbers[x][y-1]=='B' && numbers [x-1][y]=='B' && numbers[x][y+1]=='B' && numbers[x+1][y]=='B')){ } } } void getUserInput(){ int run=1; while(run){ printf("Enter x coordinate\n"); scanf("%d",&x); printf("Enter y coordinate\n"); scanf("%d",&y); if((x>18 || y>18 || x<0 || y<0) && !( numbers[x][y]=='.' )){ printf("invalid imput\n"); } else{ numbers[x][y]='B'; run=0; drawB(); } } } */ void getCupInput(){ //go through borad //starting from [0][0] //stop at first player stone //save as target x and target y //surround target x and target y //if already surrounded //start looking in borad again from last position //at end of board reset to [0][0] for(s=0;s<19;s++) { for(m=0;m<19;m++) { if (numbers[s][m]==0){ count++; } } } x=x-2; y=y+2; numbers[x][y]='A'; drawB(); } while(1){ //getUserInput(); getCupInput(); } system("pause"); return 0; }

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• Magento - edit form in custom module grid

  - by Shani1351

  I have a custom module and I have a working grid to menage the module items in the admin. My module file structore is : app\code\local\G4R\GroupSales\Block\Adminhtml\Groupsale\ I want to add an edit form so I can view and edit each item in the grid. I followed this tutorial : http://www.magentocommerce.com/wiki/5_-_modules_and_development/0_-_module_development_in_magento/custom_module_with_custom_database_table#part_2_-_backend_administration but when the edit page loads, instead of the tab content I get an error : Fatal error: Call to a member function setData() on a non-object in C:\xampp\htdocs\mystore\app\code\core\Mage\Adminhtml\Block\Widget\Form\Container.php on line 129 This is my code : /app/code/local/G4R/GroupSales/Block/Adminhtml/Groupsale/Edit.php <?php class G4R_GroupSales_Block_Adminhtml_Groupsale_Edit extends Mage_Adminhtml_Block_Widget_Form_Container { public function __construct() { parent::__construct(); $this->_objectId = 'id'; $this->_blockGroup = 'groupsale'; $this->_controller = 'adminhtml_groupsales'; $this->_updateButton('save', 'label', Mage::helper('groupsales')->__('Save Item')); $this->_updateButton('delete', 'label', Mage::helper('groupsales')->__('Delete Item')); } public function getHeaderText() { if( Mage::registry('groupsale_data') && Mage::registry('groupsale_data')->getId() ) { return Mage::helper('groupsales')->__("Edit Item '%s'", $this->htmlEscape(Mage::registry('groupsale_data')->getTitle())); } else { return Mage::helper('groupsales')->__('Add Item'); } } } /app/code/local/G4R/GroupSales/Block/Adminhtml/Groupsale/Edit/Form.php : <?php class G4R_GroupSales_Block_Adminhtml_Groupsale_Edit_Form extends Mage_Adminhtml_Block_Widget_Form { protected function _prepareForm() { $form = new Varien_Data_Form(array( 'id' => 'edit_form', 'action' => $this->getUrl('*/*/save', array('id' => $this->getRequest()->getParam('id'))), 'method' => 'post', ) ); $form->setUseContainer(true); $this->setForm($form); return parent::_prepareForm(); } } /app/code/local/G4R/GroupSales/Block/Adminhtml/Groupsale/Edit/Tabs.php: <?php class G4R_GroupSales_Block_Adminhtml_Groupsale_Edit_Tabs extends Mage_Adminhtml_Block_Widget_Tabs { public function __construct() { parent::__construct(); $this->setId('groupsales_groupsale_tabs'); $this->setDestElementId('edit_form'); $this->setTitle(Mage::helper('groupsales')->__('Groupsale Information')); } protected function _beforeToHtml() { $this->addTab('form_section', array( 'label' => Mage::helper('groupsales')->__('Item Information 1'), 'title' => Mage::helper('groupsales')->__('Item Information 2'), 'content' => $this->getLayout()->createBlock('groupsales/adminhtml_groupsale_edit_tab_form')->toHtml(), )); return parent::_beforeToHtml(); } } /app/code/local/G4R/GroupSales/Block/Adminhtml/Groupsale/Edit/Tab/Form.php : <?php class G4R_GroupSales_Block_Adminhtml_Groupsale_Edit_Tab_Form extends Mage_Adminhtml_Block_Widget_Form { protected function _prepareForm() { $form = new Varien_Data_Form(); $this->setForm($form); $fieldset = $form->addFieldset('groupsales_form', array('legend'=>Mage::helper('groupsales')->__('Item information 3'))); // $fieldset->addField('title', 'text', array( // 'label' => Mage::helper('groupsales')->__('Title'), // 'class' => 'required-entry', // 'required' => true, // 'name' => 'title', // )); // if ( Mage::getSingleton('adminhtml/session')->getGroupsaleData() ) { $form->setValues(Mage::getSingleton('adminhtml/session')->getGroupsaleData()); Mage::getSingleton('adminhtml/session')->setGroupsaleData(null); } elseif ( Mage::registry('groupsale_data') ) { $form->setValues(Mage::registry('groupsale_data')->getData()); } return parent::_prepareForm(); } } /app/code/local/G4R/GroupSales/controllers/Adminhtml/GroupsaleController.php : <?php class G4R_GroupSales_Adminhtml_GroupsaleController extends Mage_Adminhtml_Controller_Action { protected function _initAction() { $this->loadLayout() ->_setActiveMenu('groupsale/items') ->_addBreadcrumb(Mage::helper('adminhtml')->__('Items Manager'), Mage::helper('adminhtml')->__('Item Manager')); return $this; } public function indexAction() { $this->_initAction(); $this->_addContent($this->getLayout()->createBlock('groupsales/adminhtml_groupsale')); $this->renderLayout(); } public function editAction() { $groupsaleId = $this->getRequest()->getParam('id'); $groupsaleModel = Mage::getModel('groupsales/groupsale')->load($groupsaleId); if ($groupsaleModel->getId() || $groupsaleId == 0) { Mage::register('groupsale_data', $groupsaleModel); $this->loadLayout(); $this->_setActiveMenu('groupsale/items'); $this->_addBreadcrumb(Mage::helper('adminhtml')->__('Item Manager'), Mage::helper('adminhtml')->__('Item Manager')); $this->_addBreadcrumb(Mage::helper('adminhtml')->__('Item News'), Mage::helper('adminhtml')->__('Item News')); $this->getLayout()->getBlock('head')->setCanLoadExtJs(true); $this->_addContent($this->getLayout()->createBlock('groupsales/adminhtml_groupsale_edit')) ->_addLeft($this->getLayout()->createBlock('groupsales/adminhtml_groupsale_edit_tabs')); $this->renderLayout(); } else { Mage::getSingleton('adminhtml/session')->addError(Mage::helper('groupsales')->__('Item does not exist')); $this->_redirect('*/*/'); } } public function newAction() { $this->_forward('edit'); } public function saveAction() { if ( $this->getRequest()->getPost() ) { try { $postData = $this->getRequest()->getPost(); $groupsaleModel = Mage::getModel('groupsales/groupsale'); $groupsaleModel->setId($this->getRequest()->getParam('id')) ->setTitle($postData['title']) ->setContent($postData['content']) ->setStatus($postData['status']) ->save(); Mage::getSingleton('adminhtml/session')->addSuccess(Mage::helper('adminhtml')->__('Item was successfully saved')); Mage::getSingleton('adminhtml/session')->setGroupsaleData(false); $this->_redirect('*/*/'); return; } catch (Exception $e) { Mage::getSingleton('adminhtml/session')->addError($e->getMessage()); Mage::getSingleton('adminhtml/session')->setGroupsaleData($this->getRequest()->getPost()); $this->_redirect('*/*/edit', array('id' => $this->getRequest()->getParam('id'))); return; } } $this->_redirect('*/*/'); } public function deleteAction() { if( $this->getRequest()->getParam('id') > 0 ) { try { $groupsaleModel = Mage::getModel('groupsales/groupsale'); $groupsaleModel->setId($this->getRequest()->getParam('id')) ->delete(); Mage::getSingleton('adminhtml/session')->addSuccess(Mage::helper('adminhtml')->__('Item was successfully deleted')); $this->_redirect('*/*/'); } catch (Exception $e) { Mage::getSingleton('adminhtml/session')->addError($e->getMessage()); $this->_redirect('*/*/edit', array('id' => $this->getRequest()->getParam('id'))); } } $this->_redirect('*/*/'); } /** * Product grid for AJAX request. * Sort and filter result for example. */ public function gridAction() { $this->loadLayout(); $this->getResponse()->setBody( $this->getLayout()->createBlock('importedit/adminhtml_groupsales_grid')->toHtml() ); } } Any ideas what is the cause for the error?

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• Casting interfaces in java

  - by owca

  I had two separate interfaces, one 'MultiLingual' for choosing language of text to return, and second 'Justification' to justify returned text. Now I need to join them, but I'm stuck at 'java.lang.ClassCastException' error. Class Book is not important here. Data.length and FormattedInt.width correspond to the width of the line. The code : public interface MultiLingual { static int ENG = 0; static int PL = 1; String get(int lang); int setLength(int length); } class Book implements MultiLingual { private String title; private String publisher; private String author; private int jezyk; public Book(String t, String a, String p, int y){ this(t, a, p, y, 1); } public Book(String t, String a, String p, int y, int lang){ title = t; author = a; publisher = p; jezyk = lang; } public String get(int lang){ jezyk = lang; return this.toString(); } public int setLength(int i){ return 0; } @Override public String toString(){ String dane; if (jezyk == ENG){ dane = "Author: "+this.author+"\n"+ "Title: "+this.title+"\n"+ "Publisher: "+this.publisher+"\n"; } else { dane = "Autor: "+this.author+"\n"+ "Tytul: "+this.title+"\n"+ "Wydawca: "+this.publisher+"\n"; } return dane; } } class Data implements MultiLingual { private int day; private int month; private int year; private int jezyk; private int length; public Data(int d, int m, int y){ this(d, m, y, 1); } public Data(int d, int m, int y, int lang){ day = d; month = m; year = y; jezyk = lang; } public String get(int lang){ jezyk = lang; return this.toString(); } public int setLength(int i){ length = i; return length; } @Override public String toString(){ String dane=""; String miesiac=""; String dzien=""; switch(month){ case 1: miesiac="January"; case 2: miesiac="February"; case 3: miesiac="March"; case 4: miesiac="April"; case 5: miesiac="May"; case 6: miesiac="June"; case 7: miesiac="July"; case 8: miesiac="August"; case 9: miesiac="September"; case 10: miesiac="October"; case 11: miesiac="November"; case 12: miesiac="December"; } if(day==1){ dzien="st"; } if(day==2 || day==22){ dzien="nd"; } if(day==3 || day==23){ dzien="rd"; } else{ dzien="th"; } if(jezyk==ENG){ dane =this.day+dzien+" of "+miesiac+" "+this.year; } else{ dane = this.day+"."+this.month+"."+this.year; } return dane; } } interface Justification { static int RIGHT=1; static int LEFT=2; static int CENTER=3; String justify(int just); } class FormattedInt implements Justification { private int liczba; private int width; private int wyrownanie; public FormattedInt(int s, int i){ liczba = s; width = i; wyrownanie = 2; } public String justify(int just){ wyrownanie = just; String wynik=""; String tekst = Integer.toString(liczba); int len = tekst.length(); int space_left=width - len; int space_right = space_left; int space_center_left = (width - len)/2; int space_center_right = width - len - space_center_left -1; String puste=""; if(wyrownanie == LEFT){ for(int i=0; i<space_right; i++){ puste = puste + " "; } wynik = tekst+puste; } else if(wyrownanie == RIGHT){ for(int i=0; i<space_left; i++){ puste = puste + " "; } wynik = puste+tekst; } else if(wyrownanie == CENTER){ for(int i=0; i<space_center_left; i++){ puste = puste + " "; } wynik = puste + tekst; puste = " "; for(int i=0; i< space_center_right; i++){ puste = puste + " "; } wynik = wynik + puste; } return wynik; } } And the test code that shows this casting "(Justification)gatecrasher[1]" which gives me errors : MultiLingual gatecrasher[]={ new Data(3,12,1998), new Data(10,6,1924,MultiLingual.ENG), new Book("Sekret","Rhonda Byrne", "Nowa proza",2007), new Book("Tuesdays with Morrie", "Mitch Albom", "Time Warner Books",2003, MultiLingual.ENG), }; gatecrasher[0].setLength(25); gatecrasher[1].setLength(25); Justification[] t={ new FormattedInt(345,25), (Justification)gatecrasher[1], (Justification)gatecrasher[0], new FormattedInt(-7,25) }; System.out.println(" 10 20 30"); System.out.println("123456789 123456789 123456789"); for(int i=0;i < t.length;i++) System.out.println(t[i].justify(Justification.RIGHT)+"<----\n");

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• problem with sqldatasource and data binding

  - by Alexander

  I am trying to pull out data from the table I had from the database according to the id which is passed from the URL. However I always get data from id= 1? Why? FYI I took this code directly from the ClubWebsite starter kit and copy and paste it to my project to make several changes, the ClubWebsite one worked fine.. but this one doesn't and can't find any reason why because they both looked exactly the same. <%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Events_View.aspx.cs" Inherits="Events_View" %> <asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="splash" Runat="Server"> <div id="splash4">&nbsp;</div> </asp:Content> <asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <div id="content"> <div class="post"> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ClubDatabase %>" SelectCommand="SELECT dbo.Events.id, dbo.Events.starttime, dbo.events.endtime, dbo.Events.title, dbo.Events.description, dbo.Events.staticURL, dbo.Events.address FROM dbo.Events"> <SelectParameters> <asp:Parameter Type="Int32" DefaultValue="1" Name="id"></asp:Parameter> </SelectParameters> </asp:SqlDataSource> <asp:FormView ID="FormView1" runat="server" DataSourceID="SqlDataSource1" DataKeyNames="id" AllowPaging="false" Width="100%"> <ItemTemplate> <h2> <asp:Label Text='<%# Eval("title") %>' runat="server" ID="titleLabel" /> </h2> <div> <br /> <p> <asp:Label Text='<%# Eval("address") %>' runat="server" ID="addressLabel" /> </p> <p> <asp:Label Text='<%# Eval("starttime","{0:D}") %>' runat="server" ID="itemdateLabel" /> <br /> <asp:Label Text='<%# ShowDuration(Eval("starttime"),Eval("endtime")) %>' runat="server" ID="Label1" /> </p> </div> <p> <asp:Label Text='<%# Eval("description") %>' runat="server" ID="descriptionLabel" /> </p> </ItemTemplate> </asp:FormView> <div class="dashedline"> </div> </div> </div> </asp:Content> using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data.SqlClient; using System.Configuration; using System.Data; public partial class Events_View : System.Web.UI.Page { const int INVALIDID = -1; protected void Page_Load(object sender, System.EventArgs e) { SqlDataSource1.SelectParameters["id"].DefaultValue = System.Convert.ToString(EventID); } public int EventID { get { int m_EventID; object id = ViewState["EventID"]; if (id != null) { m_EventID = (int)id; } else { id = Request.QueryString["EventID"]; if (id != null) { m_EventID = System.Convert.ToInt32(id); } else { m_EventID = 1; } ViewState["EventID"] = m_EventID; } return m_EventID; } set { ViewState["EventID"] = value; } } protected void FormView1_DataBound(object sender, System.EventArgs e) { DataRowView view = (DataRowView)(FormView1.DataItem); object o = view["staticURL"]; if (o != null && o != DBNull.Value) { string staticurl = (string)o; if (staticurl != "") { Response.Redirect(staticurl); } } } protected string ShowLocationLink(object locationname, object id) { if (id != null && id != DBNull.Value) { return "At <a href='Locations_view.aspx?LocationID=" + Convert.ToString(id) + "'>" + (string)locationname + "</a><br/>"; } else { return ""; } } protected string ShowDuration(object starttime, object endtime) { DateTime starttimeDT = (DateTime)starttime; if (endtime != null && endtime != DBNull.Value) { DateTime endtimeDT = (DateTime)endtime; if (starttimeDT.Date == endtimeDT.Date) { if (starttimeDT == endtimeDT) { return starttimeDT.ToString("h:mm tt"); } else { return starttimeDT.ToString("h:mm tt") + " - " + endtimeDT.ToString("h:mm tt"); } } else { return "thru " + endtimeDT.ToString("M/d/yy"); } } else { return starttimeDT.ToString("h:mm tt"); } } }

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• Custom styled select box

  - by Ivan

  Hi to all am trying to use javascript for custom styled select boxes from www.gerrendesign.com/entry_images/selectboxdemo.zip and as I have plenty entries inside one of select box I need to make but am stuck in creation of scrolling function. As this select boxes are compatible with almost all older and new browsers. I need only suggestion or solution how to add scroll in this linked/attached files above - if select box is populated with plenty of entries (example cities, states, or exchange rates...) Am stuck here... Thanks for your cooperation Ivan THIS IS CODE: $(document).ready(function(){ // first locate all of the select tags on the page and hide them $("select.changeMe").css('display','none'); //now, for each select box, run this function $("select.changeMe").each(function(){ var curSel = $(this); // get the CSS width from the original select box var gddWidth = $(curSel).css('width'); var gddWidthL = gddWidth.slice(0,-2); var gddWidth2 = gddWidthL - 28; var gddWidth3 = gddWidthL - 16; // build the new div structure var gddTop = '<div style="width:' + gddWidthL + 'px" class="selectME" tabindex="0"><div class="cornerstop"><div><div></div></div></div><div class="middle"><div><div><div>'; //get the default selected option var whatSelected = $(curSel).children('option:selected').text(); //write the default var gddFirst = '<div class="first"><span class="selectME gselected" style="width:'+ gddWidth2 + 'px;">'+ whatSelected +'</span><span id="arrowImg"></span><div class="clears"></div></div><ul class="selectME">'; // create a new array of div options from the original's options var addItems = new Array(); $(curSel).children('option').each( function() { var text = $(this).text(); var selVal = $(this).attr('value'); var before = '<li style="width:' + gddWidthL + 'px;"><a href="#" rel="' + selVal + '" tabindex="0" style="width:' + gddWidth3 + 'px;">'; var after = '</a></li>'; addItems.push(before + text + after); }); //hide the default from the list of options var removeFirst = addItems.shift(); // create the end of the div selectbox and close everything off var gddBottom ='</ul></div></div></div></div><div class="cornersbottom"><div><div></div></div></div></div>' //write everything after each selectbox var GDD = gddTop + gddFirst + addItems.join('') + gddBottom; $(curSel).after(GDD); //this var selects the div select box directly after each of the origials var nGDD = $(curSel).next('div.selectME'); $(nGDD).find('li:first').addClass("first"); $(nGDD).find('li:last').addClass('last'); //handle the on click functions - push results back to old text box $(nGDD).click( function(e) { var myTarA = $(e.target).attr('rel'); var myTarT = $(e.target).text(); var myTar = $(e.target); //if closed, then open if( $(nGDD).find('li').css('display') == 'none') { //this next line closes any other selectboxes that might be open $('div.selectME').find('li').css('display','none'); $(nGDD).find('li').css('display','block'); //if user clicks off of the div select box, then shut the whole thing down $(document.window || 'body').click( function(f) { var myTar2 = $(f.target); if (myTar2 !== nGDD) {$(nGDD).find('li').css('display','none');} }); return false; } else { if (myTarA == null){ $(nGDD).find('li').css('display','none'); return false; } else { //set the value of the old select box $(curSel).val(myTarA); //set the text of the new one $(nGDD).find('span.gselected').text(myTarT); $(nGDD).find('li').css('display','none'); return false; } } //handle the tab index functions }).focus( function(e) { $(nGDD).find('li:first').addClass('currentDD'); $(nGDD).find('li:last').addClass('lastDD'); function checkKey(e){ //on keypress handle functions function moveDown() { var current = $(nGDD).find('.currentDD:first'); var next = $(nGDD).find('.currentDD').next(); if ($(current).is('.lastDD')){ return false; } else { $(next).addClass('currentDD'); $(current).removeClass('currentDD'); } } function moveUp() { var current = $(nGDD).find('.currentDD:first'); var prev = $(nGDD).find('.currentDD').prev(); if ($(current).is('.first')){ return false; } else { $(prev).addClass('currentDD'); $(current).removeClass('currentDD'); } } var curText = $(nGDD).find('.currentDD:first').text(); var curVal = $(nGDD).find('.currentDD:first a').attr('rel'); switch (e.keyCode) { case 40: $(curSel).val(curVal); $(nGDD).find('span.gselected').text(curText); moveDown(); return false; break; case 38: $(curSel).val(curVal); $(nGDD).find('span.gselected').text(curText); moveUp(); return false; break; case 13: $(nGDD).find('li').css('display','none'); } } $(document).keydown(checkKey); }).blur( function() { $(document).unbind('keydown'); }); }); });

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• C++ Mutexes and STL Lists Across Subclasses

  - by Genesis

  I am currently writing a multi-threaded C++ server using Poco and am now at the point where I need to be keeping information on which users are connected, how many connections each of them have, and given it is a proxy server, where each of those connections are proxying through to. For this purpose I have created a ServerStats class which holds an STL list of ServerUser objects. The ServerStats class includes functions which can add and remove objects from the list as well as find a user in the list an return a pointer to them so I can access member functions within any given ServerUser object in the list. The ServerUser class contains an STL list of ServerConnection objects and much like the ServerStats class it contains functions to add, remove and find elements within this list. Now all of the above is working but I am now trying to make it threadsafe. I have defined a Poco::FastMutex within the ServerStats class and can lock/unlock this in the appropriate places so that STL containers are not modified at the same time as being searched for example. I am however having an issue setting up mutexes within the ServerUser class and am getting the following compiler error: /root/poco/Foundation/include/Poco/Mutex.h: In copy constructor âServerUser::ServerUser(const ServerUser&)â: src/SocksServer.cpp:185: instantiated from âvoid __gnu_cxx::new_allocator<_Tp::construct(_Tp*, const _Tp&) [with _Tp = ServerUser]â /usr/include/c++/4.4/bits/stl_list.h:464: instantiated from âstd::_List_node<_Tp* std::list<_Tp, _Alloc::_M_create_node(const _Tp&) [with _Tp = ServerUser, _Alloc = std::allocator]â /usr/include/c++/4.4/bits/stl_list.h:1407: instantiated from âvoid std::list<_Tp, _Alloc::_M_insert(std::_List_iterator<_Tp, const _Tp&) [with _Tp = ServerUser, _Alloc = std::allocator]â /usr/include/c++/4.4/bits/stl_list.h:920: instantiated from âvoid std::list<_Tp, _Alloc::push_back(const _Tp&) [with _Tp = ServerUser, _Alloc = std::allocator]â src/SocksServer.cpp:301: instantiated from here /root/poco/Foundation/include/Poco/Mutex.h:164: error: âPoco::FastMutex::FastMutex(const Poco::FastMutex&)â is private src/SocksServer.cpp:185: error: within this context In file included from /usr/include/c++/4.4/x86_64-linux-gnu/bits/c++allocator.h:34, from /usr/include/c++/4.4/bits/allocator.h:48, from /usr/include/c++/4.4/string:43, from /root/poco/Foundation/include/Poco/Bugcheck.h:44, from /root/poco/Foundation/include/Poco/Foundation.h:147, from /root/poco/Net/include/Poco/Net/Net.h:45, from /root/poco/Net/include/Poco/Net/TCPServerParams.h:43, from src/SocksServer.cpp:1: /usr/include/c++/4.4/ext/new_allocator.h: In member function âvoid __gnu_cxx::new_allocator<_Tp::construct(_Tp*, const _Tp&) [with _Tp = ServerUser]â: /usr/include/c++/4.4/ext/new_allocator.h:105: note: synthesized method âServerUser::ServerUser(const ServerUser&)â first required here src/SocksServer.cpp: At global scope: src/SocksServer.cpp:118: warning: âstd::string getWord(std::string)â defined but not used make: * [/root/poco/SocksServer/obj/Linux/x86_64/debug_shared/SocksServer.o] Error 1 The code for the ServerStats, ServerUser and ServerConnection classes is below: class ServerConnection { public: bool continue_connection; int bytes_in; int bytes_out; string source_address; string destination_address; ServerConnection() { continue_connection = true; } ~ServerConnection() { } }; class ServerUser { public: string username; int connection_count; string client_ip; ServerUser() { } ~ServerUser() { } ServerConnection* addConnection(string source_address, string destination_address) { //FastMutex::ScopedLock lock(_connection_mutex); ServerConnection connection; connection.source_address = source_address; connection.destination_address = destination_address; client_ip = getWord(source_address, ":"); _connections.push_back(connection); connection_count++; return &_connections.back(); } void removeConnection(string source_address) { //FastMutex::ScopedLock lock(_connection_mutex); for(list<ServerConnection>::iterator it = _connections.begin(); it != _connections.end(); it++) { if(it->source_address == source_address) { it = _connections.erase(it); connection_count--; } } } void disconnect() { //FastMutex::ScopedLock lock(_connection_mutex); for(list<ServerConnection>::iterator it = _connections.begin(); it != _connections.end(); it++) { it->continue_connection = false; } } list<ServerConnection>* getConnections() { return &_connections; } private: list<ServerConnection> _connections; //UNCOMMENTING THIS LINE BREAKS IT: //mutable FastMutex _connection_mutex; }; class ServerStats { public: int current_users; ServerStats() { current_users = 0; } ~ServerStats() { } ServerUser* addUser(string username) { FastMutex::ScopedLock lock(_user_mutex); for(list<ServerUser>::iterator it = _users.begin(); it != _users.end(); it++) { if(it->username == username) { return &(*it); } } ServerUser newUser; newUser.username = username; _users.push_back(newUser); current_users++; return &_users.back(); } void removeUser(string username) { FastMutex::ScopedLock lock(_user_mutex); for(list<ServerUser>::iterator it = _users.begin(); it != _users.end(); it++) { if(it->username == username) { _users.erase(it); current_users--; break; } } } ServerUser* getUser(string username) { FastMutex::ScopedLock lock(_user_mutex); for(list<ServerUser>::iterator it = _users.begin(); it != _users.end(); it++) { if(it->username == username) { return &(*it); } } return NULL; } private: list<ServerUser> _users; mutable FastMutex _user_mutex; }; Now I have never used C++ for a project of this size or mutexes for that matter so go easy please :) Firstly, can anyone tell me why the above is causing a compiler error? Secondly, can anyone suggest a better way of storing the information I require? Bear in mind that I need to update this info whenever connections come or go and it needs to be global to the whole server.

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• what is the problem in ATM machine program

  - by Have alook

  in this prigramm when the account number is uncorrect it should display a message to write a gain but when i wrote a gain by corrrect account number always it diplay the result of first account also there is aproblem in PIN number ,the use have only three time to try if he enter wrong numbe and if enter three times wrong it should stop the program but it complete to the last part I dont know why pleas help me this is my proram import java.util.*; class assignment2_70307{ public static void main(String args[]){ Scanner m=new Scanner(System.in); int i; i=0; int [] accountNo =new int[7] ;//declear the Accont number array accountNo [0] =1111; accountNo [1] =2222; accountNo [2] =3333; accountNo [3] =4444; accountNo [4] =5555; accountNo [5] =6666; accountNo [6] =7777; int [] PINno =new int[7]; //declear the PIN number array PINno [0] =1234; PINno [1] =5678; PINno [2] =9874; PINno [3] =6523; PINno [4] =1236; PINno [5] =4569; PINno [6] =8521; String [] CusomerNm =new String[7]; //dclear the customer name CusomerNm [0] ="Ali"; CusomerNm [1] ="Ahmed"; CusomerNm [2] ="Amal"; CusomerNm [3] ="Said"; CusomerNm [4] ="Rashid"; CusomerNm [5] ="Fatema"; CusomerNm [6] ="Mariam"; double [] Balance =new double[7]; //declear the Balane array Balance [0] =100.50; Balance [1] =5123.00; Balance [2] =12.00; Balance [3] =4569.00; Balance [4] =1020.25; Balance [5] =0.00; Balance [6] =44.10; System.out.println("Wellcome to mini ATM Machine"); int accountno,pino; accountno=0; pino=0; System.out.println("Please Enter your account number: or -1 to stop" ); accountno=m.nextInt(); if (accountno==accountNo[0]) System.out.print("Customer Name: "+CusomerNm [0]+ "\n" ); else if (accountno==accountNo[1]) System.out.print("Customer Name: "+CusomerNm [1]+ "\n" ); else if (accountno==accountNo[2]) System.out.print("Customer Name: "+CusomerNm [2]+ "\n" ); else if (accountno==accountNo[3]) System.out.print("Customer Name: "+CusomerNm [3]+ "\n" ); else if (accountno==accountNo[4]) System.out.print("Customer Name: "+CusomerNm [4]+ "\n" ); else if (accountno==accountNo[5]) System.out.print("Customer Name: "+CusomerNm [5]+ "\n" ); else if (accountno==accountNo[6]) System.out.print("Customer Name: "+CusomerNm [6]+ "\n" ); // else if (accountNo[0]==-1) //break; else { System.out.println("The account dose not exist,please try again"); //accountNo[i]=m.nextInt(); accountno=m.nextInt(); if(accountNo[i]==accountno) System.out.println("Customer Name: "+CusomerNm[i] ); else System.out.println("The account dose not exist,please try again"); accountno=m.nextInt(); System.out.println("Customer Name: "+CusomerNm[i] ); } System.out.print("Enter your PIN number:"); PINno[i]=m.nextInt(); if(PINno[i]==1234) { System.out.println(PINno[i]); System.out.println("Balance:"+Balance [0]+ "Rial"); //return 0; } else if(PINno[i]==5678) { System.out.println(PINno[i]); System.out.println("Balance:"+Balance [1]+ "Rial"); // return 1; } else if(PINno[i]==9874) { System.out.println(PINno[i]); System.out.println("Balance:"+Balance [2]+ "Rial"); // return 2; } else if(PINno[i]==6523) { System.out.println(PINno[i]); System.out.println("Balance:"+Balance [3]+ "Rial"); // return 3; } else if(PINno[i]==1236) { System.out.println(PINno[i]); System.out.println("Balance:"+Balance [4]+ "Rial"); // return 4; } else if(PINno[i]==4569) { System.out.println(PINno[i]); System.out.println("Balance:"+Balance [5]+ "Rial"); // return 5; } else if(PINno[i]==8521) { System.out.println(PINno[i]); System.out.println("Balance:"+Balance [6]+ "Rial"); // return 6; } else {System.out.println("try again"); //return 7; //if its wrong u can enter PIN number three times only for( i=0;i<2;i++) { System.out.println("enter pin again"); PINno[i]=m.nextInt(); String ss; //ss = "MAnal"; // goto ss ; } } //ss = "m"; int x; x=0; System.out.println("Enter the option from the list /n 1.Deposit /n 2.Withdraw /n 3.Balance"); x=m.nextInt(); double balance,amount; balance=0; amount=0; double deposit ,Withdraw; deposit=0; Withdraw=0; if (x==1){ System.out.println("Enter the amont you want to deposit:"+amount); amount=m.nextDouble(); Balance [i]=Balance [i]+amount; System.out.println("your balance ="+Balance [i]); } else if (x==2) { System.out.println("Enter the amont to withdraw:"); amount=m.nextDouble(); System.out.print(amount); if(Withdraw<=Balance [i]) { Balance [i]=Balance [i]-amount; System.out.println("your balance ="+Balance [i]); } else { System.out.println("sorry,please enter the amont less or equal your balance"); System.out.println(Balance [i]); } } else { if(x==1) { Balance [i]=Balance [i]+deposit; System.out.println("your current balance is :" +Balance [i]); } else { Balance [i]=Balance [i]-Withdraw; System.out.println("your current balance is :"+Balance [i]); } System.out.println("Thank you"); // err() } } }

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• Android: Crashed when single contact is clicked

  - by Sean Tan

  My application is always crashed at this moment, guru here please help me to solved. Thanks.The situation now is as mentioned in title above. Hereby is my AndroidManifest.xml <?xml version="1.0" encoding="utf-8"?> <!-- Copyright (C) 2009 The Android Open Source Project Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.android.contactmanager" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="10" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.MANAGE_ACCOUNTS"/> <uses-permission android:name="android.permission.WRITE_OWNER_DATA"/> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.CALL_PHONE"/> <uses-permission android:name="android.permission.GET_ACCOUNTS" /> <uses-permission android:name="android.permission.READ_CONTACTS" /> <uses-permission android:name="android.permission.WRITE_CONTACTS" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.GET_ACCOUNTS"/> <application android:label="@string/app_name" android:icon="@drawable/icon" android:allowBackup="true"> <!-- --><activity android:name=".ContactManager" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="ContactAdder" android:label="@string/addContactTitle"> </activity> <activity android:name=".SingleListContact" android:label="Contact Person Details"> </activity> </application> </manifest> The SingleListContact.java package com.example.android.contactmanager; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.widget.TextView; public class SingleListContact extends Activity{ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.single_list_contact_view); TextView txtContact = (TextView) findViewById(R.id.contactList); Intent i = getIntent(); // getting attached intent data String contact = i.getStringExtra("contact"); // displaying selected product name txtContact.setText(contact); } } My ContactManager.java as below /* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.example.android.contactmanager; import android.app.Activity; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.ContactsContract; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.CompoundButton.OnCheckedChangeListener; import android.widget.ListView; import android.widget.SimpleCursorAdapter; import android.widget.TextView; public final class ContactManager extends Activity implements OnItemClickListener { public static final String TAG = "ContactManager"; private Button mAddAccountButton; private ListView mContactList; private boolean mShowInvisible; //public BooleanObservable ShowInvisible = new BooleanObservable(false); private CheckBox mShowInvisibleControl; /** * Called when the activity is first created. Responsible for initializing the UI. */ @Override public void onCreate(Bundle savedInstanceState) { Log.v(TAG, "Activity State: onCreate()"); super.onCreate(savedInstanceState); setContentView(R.layout.contact_manager); // Obtain handles to UI objects mAddAccountButton = (Button) findViewById(R.id.addContactButton); mContactList = (ListView) findViewById(R.id.contactList); mShowInvisibleControl = (CheckBox) findViewById(R.id.showInvisible); // Initialise class properties mShowInvisible = false; mShowInvisibleControl.setChecked(mShowInvisible); // Register handler for UI elements mAddAccountButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { Log.d(TAG, "mAddAccountButton clicked"); launchContactAdder(); } }); mShowInvisibleControl.setOnCheckedChangeListener(new OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { Log.d(TAG, "mShowInvisibleControl changed: " + isChecked); mShowInvisible = isChecked; populateContactList(); } }); mContactList = (ListView) findViewById(R.id.contactList); mContactList.setOnItemClickListener(this); // Populate the contact list populateContactList(); } /** * Populate the contact list based on account currently selected in the account spinner. */ private void populateContactList() { // Build adapter with contact entries Cursor cursor = getContacts(); String[] fields = new String[] { ContactsContract.Data.DISPLAY_NAME }; SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor, fields, new int[] {R.id.contactEntryText}); mContactList.setAdapter(adapter); } /** * Obtains the contact list for the currently selected account. * * @return A cursor for for accessing the contact list. */ private Cursor getContacts() { // Run query Uri uri = ContactsContract.Contacts.CONTENT_URI; String[] projection = new String[] { ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME }; String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + (mShowInvisible ? "0" : "1") + "'"; //String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + (mShowInvisible.get() ? "0" : "1") + "'"; String[] selectionArgs = null; String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC"; return this.managedQuery(uri, projection, selection, selectionArgs, sortOrder); } /** * Launches the ContactAdder activity to add a new contact to the selected account. */ protected void launchContactAdder() { Intent i = new Intent(this, ContactAdder.class); startActivity(i); } public void onItemClick(AdapterView<?> l, View v, int position, long id) { Log.i("TAG", "You clicked item " + id + " at position " + position); // Here you start the intent to show the contact details // selected item TextView tv=(TextView)v.findViewById(R.id.contactList); String allcontactlist = tv.getText().toString(); // Launching new Activity on selecting single List Item Intent i = new Intent(getApplicationContext(), SingleListContact.class); // sending data to new activity i.putExtra("Contact Person", allcontactlist); startActivity(i); } } contact_entry.xml <?xml version="1.0" encoding="utf-8"?> <!-- Copyright (C) 2009 The Android Open Source Project Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <ListView android:layout_width="wrap_content" android:id="@+id/contactList" android:layout_height="0dp" android:padding="10dp" android:textSize="200sp" android:layout_weight="10"/> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/showInvisible" android:text="@string/showInvisible"/> <Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/addContactButton" android:text="@string/addContactButtonLabel"/> </LinearLayout> Logcat result: 12-05 05:00:31.289: E/AndroidRuntime(642): FATAL EXCEPTION: main 12-05 05:00:31.289: E/AndroidRuntime(642): java.lang.NullPointerException 12-05 05:00:31.289: E/AndroidRuntime(642): at com.example.android.contactmanager.ContactManager.onItemClick(ContactManager.java:148) 12-05 05:00:31.289: E/AndroidRuntime(642): at android.widget.AdapterView.performItemClick(AdapterView.java:284) 12-05 05:00:31.289: E/AndroidRuntime(642): at android.widget.ListView.performItemClick(ListView.java:3513) 12-05 05:00:31.289: E/AndroidRuntime(642): at android.widget.AbsListView$PerformClick.run(AbsListView.java:1812) 12-05 05:00:31.289: E/AndroidRuntime(642): at android.os.Handler.handleCallback(Handler.java:587) 12-05 05:00:31.289: E/AndroidRuntime(642): at android.os.Handler.dispatchMessage(Handler.java:92) 12-05 05:00:31.289: E/AndroidRuntime(642): at android.os.Looper.loop(Looper.java:123) 12-05 05:00:31.289: E/AndroidRuntime(642): at android.app.ActivityThread.main(ActivityThread.java:3683) 12-05 05:00:31.289: E/AndroidRuntime(642): at java.lang.reflect.Method.invokeNative(Native Method) 12-05 05:00:31.289: E/AndroidRuntime(642): at java.lang.reflect.Method.invoke(Method.java:507) 12-05 05:00:31.289: E/AndroidRuntime(642): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 12-05 05:00:31.289: E/AndroidRuntime(642): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 12-05 05:00:31.289: E/AndroidRuntime(642): at dalvik.system.NativeStart.main(Native Method)

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• Call methods in main method

  - by Niloo

  this is my main method that gets 3 integers from command line and I parse then in my validating method. However I have one operation method that calls 3 other methods, but i don't know what type of data and howmany I have to put in my operatinMethod() " cuase switch only gets one); AND also in my mainMethod() for calling the operationMehod(); itself? please let me know if i'm not clear? Thanx! main method: public class test { // Global Constants final static int MIN_NUMBER = 1; final static int MAX_PRIME = 10000; final static int MAX_FACTORIAL = 12; final static int MAX_LEAPYEAR = 4000; //Global Variables static int a,b,c; public static void main (String[] args) { for(int i =0; i< args.length; i++){} if(validateInput(args[0],args[1],args[2])){ performOperations(); } } //Validate User Input public static boolean validateInput(String num1,String num2,String num3){ boolean isValid = false; try{ try{ try{ a = Integer.parseInt(num1); if(!withinRange(a,MIN_NUMBER, MAX_PRIME)) { System.out.println("The entered value " + num1 +" is out of range [1 TO 10000]."); } isValid = true; } catch(Exception ex) { System.out.println("The entered value " + num1 + " is not a valid integer. Please try again."); } b = Integer.parseInt(num2); if(!withinRange(b,MIN_NUMBER, MAX_FACTORIAL)) { System.out.println("The entered value " + num2 +" is out of range [1 TO 12]."); } isValid = true; } catch(Exception ex) { System.out.println("The entered value " + num2 + " is not a valid integer. Please try again."); } c = Integer.parseInt(num3); if(!withinRange(c,MIN_NUMBER, MAX_LEAPYEAR)) { System.out.println("The entered value " + num3 +" is out of range [1 TO 4000]."); } isValid = true; } catch(Exception ex) { System.out.println("The entered value " + num3 + " is not a valid integer. Please try again."); } return isValid; } //Check the value within the specified range private static boolean withinRange(int userInput ,int min, int max){ boolean isInRange = true; if(userInput < min || userInput > max){ isInRange = false; } return isInRange; } //Perform operations private static void performOperations(int userInput) { switch(userInput) { case 1: // count Prime numbers countPrimes(a); break; case 2: // Calculate factorial getFactorial(b); break; case 3: // find Leap year isLeapYear(c); break; } } // Verify Prime Number private static boolean isPrime(int prime) { for(int i = 2; i <= Math.sqrt(prime) ; i++) { if ((prime % i) == 0) { return false; } } return true; } // Calculate Prime private static int countPrimes(int userInput){ int count =0; for(int i=userInput; i<=MAX_PRIME; i++) { if(isPrime(i)){ count++; } } System.out.println("Exactly "+ count + " prime numbers exist between "+ a + " and 10,000."); return count; } // Calculate the factorial value private static int getFactorial(int userInput){ int ans = userInput; if(userInput >1 ){ ans*= (getFactorial(userInput-1)); //System.out.println("The value of "+ b +"! is "+ getFactorial(userInput)); } return ans; } // Determine whether the integer represents a leap year private static boolean isLeapYear(int userInput){ if (userInput % 4 == 0 && userInput % 400 == 0 && userInput % 100 ==0){ System.out.println("The year "+ c +" is a leap year"); } else { System.out.println("The year "+ c +" is a not leap year"); } return false; } }

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• Master Details and collectionViewSource in separate views cannot make it work.

  - by devnet247

  Hi all, I really cannot seem to make/understand how it works with separate views It all works fine if a bundle all together in a single window. I have a list of Countries-Cities-etc... When you select a country it should load it's cities. Works So I bind 3 listboxes successfully using collection sources and no codebehind more or less (just code to set the datacontext and selectionChanged). you can download the project here http://cid-9db5ae91a2948485.skydrive.live.com/self.aspx/PublicFolder/2MasterDetails.zip <Window.Resources> <CollectionViewSource Source="{Binding}" x:Key="cvsCountryList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCountryList},Path=Cities}" x:Key="cvsCityList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCityList},Path=Hotels}" x:Key="cvsHotelList"/> </Window.Resources> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Grid.Column="0" Grid.Row="0" Text="Countries"/> <TextBlock Grid.Column="1" Grid.Row="0" Text="Cities"/> <TextBlock Grid.Column="2" Grid.Row="0" Text="Hotels"/> <ListBox Grid.Column="0" Grid.Row="1" Name="lstCountries" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource cvsCountryList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="1" Grid.Row="1" Name="lstCities" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Source={StaticResource cvsCityList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> <ListBox Grid.Column="2" Grid.Row="1" Name="lstHotels" ItemsSource="{Binding Source={StaticResource cvsHotelList}}" DisplayMemberPath="Name" SelectionChanged="OnSelectionChanged"/> </Grid> Does not work I am trying to implement the same using a view for each eg(LeftSideMasterControl -RightSideDetailsControls) However I cannot seem to make them bind. Can you help? I would be very grateful so that I can understand how you communicate between userControls You can download the project here. http://cid-9db5ae91a2948485.skydrive.live.com/self.aspx/PublicFolder/2MasterDetails.zip I have as follows LeftSideMasterControl.xaml <Grid> <ListBox Name="lstCountries" SelectionChanged="OnSelectionChanged" DisplayMemberPath="Name" ItemsSource="{Binding Countries}"/> </Grid> RightViewDetailsControl.xaml MainView.xaml <CollectionViewSource Source="{Binding}" x:Key="cvsCountryList"/> <CollectionViewSource Source="{Binding Source={StaticResource cvsCountryList},Path=Cities}" x:Key="cvsCityList"/> </UserControl.Resources> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition Width="3*"/> </Grid.ColumnDefinitions> <Views:LeftViewMasterControl x:Name="leftSide" Margin="5" Content="{Binding Source=}"/> <GridSplitter Grid.Column="0" Grid.Row="0" Background="LightGray"/> <Views:RightViewDetailsControl Grid.Column="1" x:Name="RightSide" Margin="5"/> </Grid> ViewModels public class CountryListVM : ViewModelBase { public CountryListVM() { Countries = new ObservableCollection<CountryVM>(); } public ObservableCollection<CountryVM> Countries { get; set; } private RelayCommand _loadCountriesCommand; public ICommand LoadCountriesCommand { get { return _loadCountriesCommand ?? (_loadCountriesCommand = new RelayCommand(x => LoadCountries(), x => CanLoadCountries)); } } private static bool CanLoadCountries { get { return true; } } private void LoadCountries() { var countryList = Repository.GetCountries(); foreach (var country in countryList) { Countries.Add(new CountryVM { Name = country.Name }); } } } public class CountryVM : ViewModelBase { private string _name; public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } } public class CityListVM : ViewModelBase { private CountryVM _selectedCountry; public CityListVM(CountryVM country) { SelectedCountry = country; Cities = new ObservableCollection<CityVM>(); } public ObservableCollection<CityVM> Cities { get; set; } public CountryVM SelectedCountry { get { return _selectedCountry; } set { _selectedCountry = value; OnPropertyChanged("SelectedCountry"); } } private RelayCommand _loadCitiesCommand; public ICommand LoadCitiesCommand { get { return _loadCitiesCommand ?? (_loadCitiesCommand = new RelayCommand(x => LoadCities(), x => CanLoadCities)); } } private static bool CanLoadCities { get { return true; } } private void LoadCities() { var cities = Repository.GetCities(SelectedCountry.Name); foreach (var city in cities) { Cities.Add(new CityVM() { Name = city.Name }); } } } public class CityVM : ViewModelBase { private string _name; public string Name { get { return _name; } set { _name = value; OnPropertyChanged("Name"); } } } Models ========= public class Country { public Country() { Cities = new ObservableCollection<City>(); } public string Name { get; set; } public ObservableCollection<City> Cities { get; set; } } public class City { public City() { Hotels = new ObservableCollection<Hotel>(); } public string Name { get; set; } public ObservableCollection<Hotel> Hotels { get; set; } } public class Hotel { public string Name { get; set; } }

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• DirectX 10 Primitive is not displayed

  - by pypmannetjies

  I am trying to write my first DirectX 10 program that displays a triangle. Everything compiles fine, and the render function is called, since the background changes to black. However, the triangle I'm trying to draw with a triangle strip primitive is not displayed at all. The Initialization function: bool InitDirect3D(HWND hWnd, int width, int height) { //****** D3DDevice and SwapChain *****// DXGI_SWAP_CHAIN_DESC swapChainDesc; ZeroMemory(&swapChainDesc, sizeof(swapChainDesc)); swapChainDesc.BufferCount = 1; swapChainDesc.BufferDesc.Width = width; swapChainDesc.BufferDesc.Height = height; swapChainDesc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; swapChainDesc.BufferDesc.RefreshRate.Numerator = 60; swapChainDesc.BufferDesc.RefreshRate.Denominator = 1; swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; swapChainDesc.OutputWindow = hWnd; swapChainDesc.SampleDesc.Count = 1; swapChainDesc.SampleDesc.Quality = 0; swapChainDesc.Windowed = TRUE; if (FAILED(D3D10CreateDeviceAndSwapChain( NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, 0, D3D10_SDK_VERSION, &swapChainDesc, &pSwapChain, &pD3DDevice))) return fatalError(TEXT("Hardware does not support DirectX 10!")); //***** Shader *****// if (FAILED(D3DX10CreateEffectFromFile( TEXT("basicEffect.fx"), NULL, NULL, "fx_4_0", D3D10_SHADER_ENABLE_STRICTNESS, 0, pD3DDevice, NULL, NULL, &pBasicEffect, NULL, NULL))) return fatalError(TEXT("Could not load effect file!")); pBasicTechnique = pBasicEffect->GetTechniqueByName("Render"); pViewMatrixEffectVariable = pBasicEffect->GetVariableByName( "View" )->AsMatrix(); pProjectionMatrixEffectVariable = pBasicEffect->GetVariableByName( "Projection" )->AsMatrix(); pWorldMatrixEffectVariable = pBasicEffect->GetVariableByName( "World" )->AsMatrix(); //***** Input Assembly Stage *****// D3D10_INPUT_ELEMENT_DESC layout[] = { {"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D10_INPUT_PER_VERTEX_DATA, 0}, {"COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D10_INPUT_PER_VERTEX_DATA, 0} }; UINT numElements = 2; D3D10_PASS_DESC PassDesc; pBasicTechnique->GetPassByIndex(0)->GetDesc(&PassDesc); if (FAILED( pD3DDevice->CreateInputLayout( layout, numElements, PassDesc.pIAInputSignature, PassDesc.IAInputSignatureSize, &pVertexLayout))) return fatalError(TEXT("Could not create Input Layout.")); pD3DDevice->IASetInputLayout( pVertexLayout ); //***** Vertex buffer *****// UINT numVertices = 100; D3D10_BUFFER_DESC bd; bd.Usage = D3D10_USAGE_DYNAMIC; bd.ByteWidth = sizeof(vertex) * numVertices; bd.BindFlags = D3D10_BIND_VERTEX_BUFFER; bd.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE; bd.MiscFlags = 0; if (FAILED(pD3DDevice->CreateBuffer(&bd, NULL, &pVertexBuffer))) return fatalError(TEXT("Could not create vertex buffer!"));; UINT stride = sizeof(vertex); UINT offset = 0; pD3DDevice->IASetVertexBuffers( 0, 1, &pVertexBuffer, &stride, &offset ); //***** Rasterizer *****// // Set the viewport viewPort.Width = width; viewPort.Height = height; viewPort.MinDepth = 0.0f; viewPort.MaxDepth = 1.0f; viewPort.TopLeftX = 0; viewPort.TopLeftY = 0; pD3DDevice->RSSetViewports(1, &viewPort); D3D10_RASTERIZER_DESC rasterizerState; rasterizerState.CullMode = D3D10_CULL_NONE; rasterizerState.FillMode = D3D10_FILL_SOLID; rasterizerState.FrontCounterClockwise = true; rasterizerState.DepthBias = false; rasterizerState.DepthBiasClamp = 0; rasterizerState.SlopeScaledDepthBias = 0; rasterizerState.DepthClipEnable = true; rasterizerState.ScissorEnable = false; rasterizerState.MultisampleEnable = false; rasterizerState.AntialiasedLineEnable = true; ID3D10RasterizerState* pRS; pD3DDevice->CreateRasterizerState(&rasterizerState, &pRS); pD3DDevice->RSSetState(pRS); //***** Output Merger *****// // Get the back buffer from the swapchain ID3D10Texture2D *pBackBuffer; if (FAILED(pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID*)&pBackBuffer))) return fatalError(TEXT("Could not get back buffer.")); // create the render target view if (FAILED(pD3DDevice->CreateRenderTargetView(pBackBuffer, NULL, &pRenderTargetView))) return fatalError(TEXT("Could not create the render target view.")); // release the back buffer pBackBuffer->Release(); // set the render target pD3DDevice->OMSetRenderTargets(1, &pRenderTargetView, NULL); return true; } The render function: void Render() { if (pD3DDevice != NULL) { pD3DDevice->ClearRenderTargetView(pRenderTargetView, D3DXCOLOR(0.0f, 0.0f, 0.0f, 0.0f)); //create world matrix static float r; D3DXMATRIX w; D3DXMatrixIdentity(&w); D3DXMatrixRotationY(&w, r); r += 0.001f; //set effect matrices pWorldMatrixEffectVariable->SetMatrix(w); pViewMatrixEffectVariable->SetMatrix(viewMatrix); pProjectionMatrixEffectVariable->SetMatrix(projectionMatrix); //fill vertex buffer with vertices UINT numVertices = 3; vertex* v = NULL; //lock vertex buffer for CPU use pVertexBuffer->Map(D3D10_MAP_WRITE_DISCARD, 0, (void**) &v ); v[0] = vertex( D3DXVECTOR3(-1,-1,0), D3DXVECTOR4(1,0,0,1) ); v[1] = vertex( D3DXVECTOR3(0,1,0), D3DXVECTOR4(0,1,0,1) ); v[2] = vertex( D3DXVECTOR3(1,-1,0), D3DXVECTOR4(0,0,1,1) ); pVertexBuffer->Unmap(); // Set primitive topology pD3DDevice->IASetPrimitiveTopology( D3D10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP ); //get technique desc D3D10_TECHNIQUE_DESC techDesc; pBasicTechnique->GetDesc(&techDesc); for(UINT p = 0; p < techDesc.Passes; ++p) { //apply technique pBasicTechnique->GetPassByIndex(p)->Apply(0); //draw pD3DDevice->Draw(numVertices, 0); } pSwapChain->Present(0,0); } }

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• png image store in database and retrieve in android 1.5

  - by hany

  hai, I am new to android. I have problem. This is my code but it will not work, the problem is in view binder. Please correct it. // this is my activity package com.android.Fruits2; import java.util.ArrayList; import java.util.HashMap; import android.app.ListActivity; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.widget.SimpleAdapter; import android.widget.SimpleCursorAdapter; import android.widget.SimpleAdapter.ViewBinder; public class Fruits2 extends ListActivity { private DBhelper mDB; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // setContentView(R.layout.main); mDB = new DBhelper(this); mDB.Reset(); Bitmap img = BitmapFactory.decodeResource(getResources(), R.drawable.icon); mDB.createPersonEntry(new PersonData(img, "Harsha", 24,"mca")); String[] columns = {mDB.KEY_ID, mDB.KEY_IMG, mDB.KEY_NAME, mDB.KEY_AGE, mDB.KEY_STUDY}; String table = mDB.PERSON_TABLE; Cursor c = mDB.getHandle().query(table, columns, null, null, null, null, null); startManagingCursor(c); SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.data, c, new String[] {mDB.KEY_IMG, mDB.KEY_NAME, mDB.KEY_AGE, mDB.KEY_STUDY}, new int[] {R.id.img, R.id.name, R.id.age,R.id.study}); adapter.setViewBinder( new MyViewBinder()); setListAdapter(adapter); } } //my viewbinder package com.android.Fruits2; import android.database.Cursor; import android.graphics.BitmapFactory; import android.view.View; import android.widget.ImageView; import android.widget.SimpleCursorAdapter; public class MyViewBinder implements SimpleCursorAdapter.ViewBinder { public boolean setViewValue(View view, Cursor cursor, int columnIndex) { if( (view instanceof ImageView) ) { ImageView iv = (ImageView) view; byte[] img = cursor.getBlob(columnIndex); iv.setImageBitmap(BitmapFactory.decodeByteArray(img, 0, img.length)); return true; } return false; } } // data package com.android.Fruits2; import android.graphics.Bitmap; public class PersonData { private Bitmap bmp; private String name; private int age; private String study; public PersonData(Bitmap b, String n, int k, String v) { bmp = b; name = n; age = k; study = v; } public Bitmap getBitmap() { return bmp; } public String getName() { return name; } public int getAge() { return age; } public String getStudy() { return study; } } //dbhelper package com.android.Fruits2; import java.io.ByteArrayOutputStream; import android.content.ContentValues; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; import android.graphics.Bitmap; import android.provider.BaseColumns; public class DBhelper { public static final String KEY_ID = BaseColumns._ID; public static final String KEY_NAME = "name"; public static final String KEY_AGE = "age"; public static final String KEY_STUDY = "study"; public static final String KEY_IMG = "image"; private DatabaseHelper mDbHelper; private SQLiteDatabase mDb; private static final String DATABASE_NAME = "PersonalDB"; private static final int DATABASE_VERSION = 1; public static final String PERSON_TABLE = "Person"; private static final String CREATE_PERSON_TABLE = "create table "+PERSON_TABLE+" (" +KEY_ID+" integer primary key autoincrement, " +KEY_IMG+" blob not null, " +KEY_NAME+" text not null , " +KEY_AGE+" integer not null, " +KEY_STUDY+" text not null);"; private final Context mCtx; private boolean opened = false; private static class DatabaseHelper extends SQLiteOpenHelper { DatabaseHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } public void onCreate(SQLiteDatabase db) { db.execSQL(CREATE_PERSON_TABLE); } public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { db.execSQL("DROP TABLE IF EXISTS "+PERSON_TABLE); onCreate(db); } } public void Reset() { openDB(); mDbHelper.onUpgrade(this.mDb, 1, 1); closeDB(); } public DBhelper(Context ctx) { mCtx = ctx; mDbHelper = new DatabaseHelper(mCtx); } private SQLiteDatabase openDB() { if(!opened) mDb = mDbHelper.getWritableDatabase(); opened = true; return mDb; } public SQLiteDatabase getHandle() { return openDB(); } private void closeDB() { if(opened) mDbHelper.close(); opened = false; } public void createPersonEntry(PersonData about) { openDB(); ByteArrayOutputStream out = new ByteArrayOutputStream(); about.getBitmap().compress(Bitmap.CompressFormat.PNG, 100, out); ContentValues cv = new ContentValues(); cv.put(KEY_IMG, out.toByteArray()); cv.put(KEY_NAME, about.getName()); cv.put(KEY_AGE, about.getAge()); cv.put(KEY_STUDY, about.getStudy()); mDb.insert(PERSON_TABLE, null, cv); closeDB(); } } //data.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content"> <ImageView android:id = "@+id/img" android:layout_width = "wrap_content" android:layout_height = "wrap_content" > </ImageView> <TextView android:id = "@+id/name" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:textSize="15dp" android:textColor="#ff0000" > </TextView> <TextView android:id = "@+id/age" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:textSize="15dp" android:textColor="#ff0000" /> <TextView android:id = "@+id/study" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:textSize="15dp" android:textColor="#ff0000" /> </LinearLayout> When I run this in android 1.6 and 2.1, it works. But when I run in android 1.5, not work. My application is android 1.5. Please correct and send code to me. Thank you.

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• Im getting fatal errors... can anyone help me edit my program!

  - by user350217

  The errors i am getting are: Error 1 error LNK2019: unresolved external symbol "double __cdecl getDollarAmt(void)" (? getDollarAmt@@YANXZ) referenced in function _main hid.obj Error 2 fatal error LNK1120: 1 unresolved externals this is my program: #include<iostream> #include<cmath> #include<string> using namespace std; double getDollarAmt(); void displayCurrencies(); char getCurrencySelection (float amtExchanged); bool isSelectionValid(char selection); double calcExchangeAmt (float amtExchanged, char selection); void displayResults(double newAmount, float amtExchanged, char selection, char yesNo); const double russianRubles = 31.168; const double northKoreanWon = .385; const double chineseYuan = 6.832; const double canadianDollar = 1.1137; const double cubanPeso = 1.0; const double ethiopianBirr = 9.09; const double egyptianPound = 5.6275; const double tunisianDinar = 1.3585; const double thaiBaht = 34.4; /****** I changed the variables to global variables so you don't have to worry about accidentally setting them to 0 or assigning over a value that you need ********/ float amtEchanged = 0.0; char selection; char yesNo; double newAmount; int main() { float amtExchanged = 0.0; selection = 'a'; yesNo = 'y'; newAmount = 0.0; getDollarAmt (); displayCurrencies(); getCurrencySelection (amtExchanged); isSelectionValid(selection);/**** you only need to use the selection variable ****/ calcExchangeAmt (amtExchanged, selection); displayResults(newAmount, amtExchanged, selection, yesNo); return 0; } double getDollarAmt (float amtExchanged) // promt user for eachange amount and return it to main { float amtExchanged0;//created temporary variable to set amtExchanged to cout<< "Please enter the total dollar amount to exchange: "; cin>> amtExchanged0; amtExchanged = amtExchanged0;//setting amtExchanged to the right value return amtExchanged; } void displayCurrencies() // display list of currencies { cout<<"A Russian Ruble"<<endl <<"B North Korean Won"<<endl <<"C Chinese Yuan"<<endl <<"D Cuban Peso"<<endl <<"E Ethiopian Birr"<<endl <<"F Thai Baht"<<endl <<"G Canadian Dollars"<<endl <<"H Tunisian Dinar"<<endl <<"I Egyptian Pound"<<endl; } char getCurrencySelection (float amtExchanged) // make a selection and return to main { char selection0;//again, created a temporary variable for selection cout<<"Please enter your selection: "; cin>>selection0; selection = selection0;//setting the temporary variable to the actual variable you use /***** we are now going to see if isSelectionValid returns false. if it returns false, that means that their selection was not character A-H. if it is false we keep calling getCurrencySelection *****/ if(isSelectionValid(selection)==false) { cout<<"Sorry, the selection you chose is invalid."<<endl; getCurrencySelection(amtExchanged); } return selection; } bool isSelectionValid(char selection) // this fuction is supposed to be called from getCurrencySelection, the selction // must be sent to isSelectionValid to determine if its valid // if selection is valid send it bac to getCurrencySelection // if it is false then it is returned to getCurrencySelection and prompted to // make another selection until the selection is valid, then it is returned to main. { /**** i'm not sure if this is what you mean, all i am doing is making sure that their selection is A-H *****/ if(selection=='A' || selection=='B' || selection=='C' || selection=='D' || selection=='E' || selection=='F' || selection=='G' || selection=='H' || selection=='I') return true; else return false; } double calcExchangeAmt (float amtExchanged,char selection) // function calculates the amount of money to be exchanged { switch (toupper(selection)) { case 'A': newAmount =(russianRubles) * (amtExchanged); break; case 'B': newAmount = (northKoreanWon) * (amtExchanged); break; case 'C': newAmount = (chineseYuan) * (amtExchanged); break; case 'D': newAmount = (canadianDollar) * (amtExchanged); break; case 'E': newAmount = (cubanPeso) * (amtExchanged); break; case 'F': newAmount = (ethiopianBirr) * (amtExchanged); break; case 'G': newAmount = (egyptianPound) * (amtExchanged); break; case 'H': newAmount = (tunisianDinar) * (amtExchanged); break; case 'I': newAmount = (thaiBaht) * (amtExchanged); break; } return newAmount; } void displayResults(double newAmount, float amtExchanged, char selection, char yesNo) // displays results and asked to repeat. IF they want to repeat it clears the screen and starts over. { switch(toupper(selection)) { case 'A': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Russian Rubles."<<endl<<endl; break; case 'B': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" North Korean Won."<<endl<<endl; break; case 'C': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Chinese Yuan."<<endl<<endl; break; case 'D': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Cuban Pesos."<<endl<<endl; break; case 'E': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Ethiopian Birr."<<endl<<endl; break; case 'F': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Thai Baht."<<endl<<endl; break; case 'G': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Canadian Dollars."<<endl<<endl; break; case 'H': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Tunisian Dinar."<<endl<<endl; break; case 'I': cout<<"$"<<amtExchanged<<" is "<<newAmount<<" Egyptian Pound."<<endl<<endl; break; } cout<<"Do you wish to continue? (Y for Yes / N for No)"; cin>>yesNo; if(yesNo=='y' || yesNo=='Y') { getDollarAmt(); } else { system("cls"); } }

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• NOOB Memory Problem - EXC_BAD_ACCESS (OBJ-C/iPhone)

  - by Michael Bordelon

  I have been banging my head against the wall for a couple days and need some help. I have a feeling that I am doing something really silly here, but I cannot find the issue. This is the controller for a table view. I put the SQL in line to simplify it as part of the troubleshooting of this error. Normally, it would be in an accessor method in a model class. It gets through the SQL read just fine. Finds the two objects, loads them into the todaysWorkout array and then builds the cells for the table view. The table view actually comes up on the scree and then it throws the EXC_BAD_ACCESS. I ran instruments and it shows the following: 0 CFString Malloc 1 00:03.765 0x3946470 176 Foundation -[NSPlaceholderString initWithFormat:locale:arguments:] 1 CFString Autorelease 00:03.765 0x3946470 0 Foundation NSRecordAllocationEvent 2 CFString CFRelease 0 00:03.767 0x3946470 0 Bring It -[WorkoutViewController viewDidLoad] 3 CFString Zombie -1 00:03.917 0x3946470 0 Foundation NSPopAutoreleasePool Here is the source code for the controller. I left it all in there just in case there is something extraneous causing the problem. I sincerely appreciate any help I can get: HEADER: #import <UIKit/UIKit.h> #import <sqlite3.h> #import "NoteCell.h" #import "BIUtility.h" #import "Bring_ItAppDelegate.h" #import "MoveListViewController.h" @class MoveListViewController; @class BIUtility; @interface WorkoutViewController : UITableViewController { NSMutableArray *todaysWorkouts; IBOutlet NoteCell *woNoteCell; MoveListViewController *childController; NSInteger scheduleDay; BIUtility *bi; } @property (nonatomic, retain) NSMutableArray *todaysWorkouts; @property (nonatomic, retain) NoteCell *woNoteCell; @property (nonatomic,retain) BIUtility *bi; //@property (nonatomic, retain) SwitchCell *woSwitchCell; @end CLASS: #import "WorkoutViewController.h" #import "MoveListViewController.h" #import "Profile.h" static sqlite3 *database = nil; @implementation WorkoutViewController @synthesize todaysWorkouts; @synthesize woNoteCell; @synthesize bi; //@synthesize woSwitchCell; - (void)viewDidLoad { [super viewDidLoad]; bi = [[BIUtility alloc] init]; todaysWorkouts = [[NSMutableArray alloc] init]; NSString *query; sqlite3_stmt *statement; //open the database if (sqlite3_open([[BIUtility getDBPath] UTF8String], &database) != SQLITE_OK) { sqlite3_close(database); NSAssert(0, @"Failed to opendatabase"); } query = [NSString stringWithFormat:@"SELECT IWORKOUT.WOINSTANCEID, IWORKOUT.WORKOUTID, CWORKOUTS.WORKOUTNAME FROM CWORKOUTS JOIN IWORKOUT ON IWORKOUT.WORKOUTID = CWORKOUTS.WORKOUTID AND DATE = '%@'", [BIUtility todayDateString]]; if (sqlite3_prepare_v2(database, [query UTF8String], -1, &statement, nil) == SQLITE_OK) { while (sqlite3_step(statement) == SQLITE_ROW) { Workout *wo = [[Workout alloc] init]; wo.woInstanceID = sqlite3_column_int(statement, 0); wo.workoutID = sqlite3_column_int(statement, 1); wo.workoutName = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 2)]; [todaysWorkouts addObject:wo]; [wo release]; } sqlite3_finalize(statement); } if(database) sqlite3_close(database); [query release]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { //todaysWorkouts = [BIUtility todaysScheduledWorkouts]; static NSString *noteCellIdentifier = @"NoteCellIdentifier"; UITableViewCell *cell; if (indexPath.section < ([todaysWorkouts count])) { cell = [tableView dequeueReusableCellWithIdentifier:@"OtherCell"]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier: @"OtherCell"] autorelease]; cell.accessoryType = UITableViewCellAccessoryNone; } if (indexPath.row == 0) { Workout *wo = [todaysWorkouts objectAtIndex:indexPath.section]; [cell.textLabel setText:wo.workoutName]; } else { [cell.textLabel setText:@"Completed?"]; [cell.textLabel setFont:[UIFont fontWithName:@"Arial" size:15]]; [cell.textLabel setTextColor:[UIColor blueColor]]; } } else { cell = (NoteCell *)[tableView dequeueReusableCellWithIdentifier:noteCellIdentifier]; if (cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"NoteCell" owner:self options:nil]; cell = [nib objectAtIndex:0]; } } return cell; //[cell release]; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { NSUInteger row = [indexPath row]; if (indexPath.section < ([todaysWorkouts count]) && (row == 0)) { MoveListViewController *moveListController = [[MoveListViewController alloc] initWithStyle:UITableViewStylePlain]; moveListController.workoutID = [[todaysWorkouts objectAtIndex:indexPath.section] workoutID]; moveListController.workoutName = [[todaysWorkouts objectAtIndex:indexPath.section] workoutName]; moveListController.woInstanceID = [[todaysWorkouts objectAtIndex:indexPath.section] woInstanceID]; NSLog(@"Workout Selected: %@", [[todaysWorkouts objectAtIndex:indexPath.section] workoutName]); Bring_ItAppDelegate *delegate = [[UIApplication sharedApplication] delegate]; [delegate.workoutNavController pushViewController:moveListController animated:YES]; } else { UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath]; if (indexPath.section < ([todaysWorkouts count]) && (row == 1)) { if (cell.accessoryType == UITableViewCellAccessoryNone) { cell.accessoryType = UITableViewCellAccessoryCheckmark; } else { cell.accessoryType = UITableViewCellAccessoryNone; } } } [tableView deselectRowAtIndexPath:indexPath animated:YES]; } - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { NSInteger h = 35; return h; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return ([todaysWorkouts count] + 1); //return ([todaysWorkouts count]); } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { if (section < ([todaysWorkouts count])) { return 2; } else { return 1; } } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { if (section < ([todaysWorkouts count])) { return @"Workout"; } else { return @"How Was Your Workout?"; } } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [todaysWorkouts release]; [bi release]; [super dealloc]; } @end

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• Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error.

  - by Kp

  I get the following error in Chrome every time I try to run my script on a Linux server: Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error. In Firefox it just shows a blank white page. Whenever I run it on my local test server (IIS on Windows 7) it runs exactly the way it should with no errors. I am pretty sure that it is a problem with the imap_open function. error_reporting(E_ALL); echo "test"; // enter gmail username below e.g.-- $m_username = "yourusername"; $m_username = "username"; // enter gmail password below e.g.-- $m_password = "yourpword"; $m_password = "password"; // Enter the mail server to connect to $server = '{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX'; // enter the number of unread messages you want to display from mailbox or //enter 0 to display all unread messages e.g.-- $m_acs = 0; $m_acs = 10; // How far back in time do you want to search for unread messages - one month = 0 , two weeks = 1, one week = 2, three days = 3, // one day = 4, six hours = 5 or one hour = 6 e.g.-- $m_t = 6; $m_t = 2; //-----------Nothing More to edit below //open mailbox $m_mail = imap_open ($server, $m_username . "@gmail.com", $m_password) // or throw an error or die("ERROR: " . imap_last_error()); // unix time gone by $m_gunixtp = array(2592000, 1209600, 604800, 259200, 86400, 21600, 3600); // Date to start search $m_gdmy = date('d-M-Y', time() - $m_gunixtp[$m_t]); //search mailbox for unread messages since $m_t date $m_search=imap_search ($m_mail, 'ALL'); // Order results starting from newest message rsort($m_search); //if m_acs 0 then limit results if($m_acs 0){ array_splice($m_search, $m_acs); } $read = $_GET[read]; if ($read) { function get_mime_type(&$structure) { $primary_mime_type = array("TEXT", "MULTIPART","MESSAGE", "APPLICATION", "AUDIO","IMAGE", "VIDEO", "OTHER"); if($structure-subtype) { return $primary_mime_type[(int) $structure-type] . '/' .$structure-subtype; } return "TEXT/PLAIN"; } function get_part($stream, $msg_number, $mime_type, $structure = false,$part_number = false) { if(!$structure) { $structure = imap_fetchstructure($stream, $msg_number); } if($structure) { if($mime_type == get_mime_type($structure)) { if(!$part_number) { $part_number = "1"; } $text = imap_fetchbody($stream, $msg_number, $part_number); if($structure->encoding == 3) { return imap_base64($text); } else if($structure->encoding == 4) { return imap_qprint($text); } else { return $text; } } if($structure->type == 1) /* multipart */ { while(list($index, $sub_structure) = each($structure->parts)) { if($part_number) { $prefix = $part_number . '.'; } $data = get_part($stream, $msg_number, $mime_type, $sub_structure,$prefix . ($index + 1)); if($data) { return $data; } } // END OF WHILE } // END OF MULTIPART } // END OF STRUTURE return false; } // END OF FUNCTION // GET TEXT BODY $dataTxt = get_part($m_mail, $read, "TEXT/PLAIN"); // GET HTML BODY $dataHtml = get_part($m_mail, $read, "TEXT/HTML"); if ($dataHtml != "") { $msgBody = $dataHtml; $mailformat = "html"; } else { $msgBody = ereg_replace("\n","",$dataTxt); $mailformat = "text"; } if ($mailformat == "text") { echo "<html><head><title>Messagebody</title></head><body bgcolor=\"white\">$msgBody</body></html>"; } else { echo $msgBody; // It contains all HTML HEADER tags so we don't have to make them. } exit; } //loop it foreach ($m_search as $what_ever) { //get imap header info for obj thang $obj_thang = imap_headerinfo($m_mail, $what_ever); //get body info for obj thang $obj_thangs = imap_body($m_mail, $what_ever); //Then spit it out below.........if you dont swallow echo "Message ID# " . $what_ever . " Date: " . date("F j, Y, g:i a", $obj_thang-udate) . " From: " . $obj_thang-fromaddress . " To: " . $obj_thang-toaddress . " Subject: " . $obj_thang-Subject . " "; } echo "" . $m_empty . ""; //close mailbox imap_close($m_mail); ?

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• Embedding generic sql queries into c# program

  - by Pooja Balkundi

  Okay referring to my first question code in the main, I want the user to enter employee name at runtime and then i take this name which user has entered and compare it with the e_name of my emp table , if it exists i want to display all information of that employee , how can I achieve this ? using System; using System.Collections.Generic; using System.Linq; using System.Windows.Forms; using MySql.Data.MySqlClient; namespace ConnectCsharppToMySQL { public class DBConnect { private MySqlConnection connection; private string server; private string database; private string uid; private string password; string name; //Constructor public DBConnect() { Initialize(); } //Initialize values private void Initialize() { server = "localhost"; database = "test"; uid = "root"; password = ""; string connectionString; connectionString = "SERVER=" + server + ";" + "DATABASE=" + database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";"; connection = new MySqlConnection(connectionString); } //open connection to database private bool OpenConnection() { try { connection.Open(); return true; } catch (MySqlException ex) { //When handling errors, you can your application's response based //on the error number. //The two most common error numbers when connecting are as follows: //0: Cannot connect to server. //1045: Invalid user name and/or password. switch (ex.Number) { case 0: MessageBox.Show("Cannot connect to server. Contact administrator"); break; case 1045: MessageBox.Show("Invalid username/password, please try again"); break; } return false; } } //Close connection private bool CloseConnection() { try { connection.Close(); return true; } catch (MySqlException ex) { MessageBox.Show(ex.Message); return false; } } //Insert statement public void Insert() { string query = "INSERT INTO emp (e_name, age) VALUES('Pooja R', '21')"; //open connection if (this.OpenConnection() == true) { //create command and assign the query and connection from the constructor MySqlCommand cmd = new MySqlCommand(query, connection); //Execute command cmd.ExecuteNonQuery(); //close connection this.CloseConnection(); } } //Update statement public void Update() { string query = "UPDATE emp SET e_name='Peachy', age='22' WHERE e_name='Pooja R'"; //Open connection if (this.OpenConnection() == true) { //create mysql command MySqlCommand cmd = new MySqlCommand(); //Assign the query using CommandText cmd.CommandText = query; //Assign the connection using Connection cmd.Connection = connection; //Execute query cmd.ExecuteNonQuery(); //close connection this.CloseConnection(); } } //Select statement public List<string>[] Select() { string query = "SELECT * FROM emp where e_name=(/*I WANT USER ENTERED NAME TO GET INSERTED HERE*/)"; //Create a list to store the result List<string>[] list = new List<string>[3]; list[0] = new List<string>(); list[1] = new List<string>(); list[2] = new List<string>(); //Open connection if (this.OpenConnection() == true) { //Create Command MySqlCommand cmd = new MySqlCommand(query, connection); //Create a data reader and Execute the command MySqlDataReader dataReader = cmd.ExecuteReader(); //Read the data and store them in the list while (dataReader.Read()) { list[0].Add(dataReader["e_id"] + ""); list[1].Add(dataReader["e_name"] + ""); list[2].Add(dataReader["age"] + ""); } //close Data Reader dataReader.Close(); //close Connection this.CloseConnection(); //return list to be displayed return list; } else { return list; } } public static void Main(String[] args) { DBConnect db1 = new DBConnect(); Console.WriteLine("Initializing"); db1.Initialize(); Console.WriteLine("Search :"); Console.WriteLine("Enter the employee name"); db1.name = Console.ReadLine(); db1.Select(); Console.ReadLine(); } } }

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