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• Drop on NSTableView Behavior

  - by dave-gennel

  Hi, I have an NSTableView and I have successfully implemented both tableView:validateDrop:proposedRow:proposedDropOperation: and tableView:acceptDrop:row:dropOperation:. I don't need tableView:writeRowsWithIndexes:toPasteboard: because that's for dragging objects out of the NSTableView. Now, the problem is that I want it to behave kind of iTunes-like. In iTunes 9.x (I don't remember it for the previous versions) you have an NSTableView (the playlist) and when you drag a file over it you get this blue focus inside the NSTableView (maybe it's the NSScrollView?) and you don't have the blue horizontal line that indicates where you're going to insert an object. So basically I would like: No blue horizontal insert line between rows when hovering a file over the NSTableView. The blue focus inside the NSTableView (or NSScrollView). Any help would be greatly appreciated so thank you in advance.

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• Issue passing NSMutableDictionary to a method

  - by roswell

  Hello all, I've got a chunk of code that's passing an NSMutableDictionary (amongst other things) to a method in another class: [self.shuttle makeAPICallAndReturnResultsUsingMode:@"login" module:@"login" query:credentials]; The NSMutableArray credentials is previously defined like this: NSMutableDictionary *credentials = [[NSMutableDictionary alloc] init]; [credentials setObject:username forKey:@"username"]; [credentials setObject:password forKey:@"password"]; The method that receives it looks like this: -(id)makeAPICallAndReturnResultsUsingMode:(NSString *)mode module:(NSString *)module query:(NSMutableDictionary *)query The code works fine up until this point within the above method: [query setObject:self.sessionID forKey:@"session_id"]; At this point, the application terminates -- the console informs me of this exception: * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[NSCFDictionary setObject:forKey:]: method sent to an uninitialized mutable dictionary object' This leads me to believe that I must initialize NSMutableDictionary in some way in my new method before I can access it, but I have no idea how. Any advice?

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• Memory Allocation Profiling in C++

  - by Amit Kumar

  I am writing an application and am surprised to see its total memory usage is already too high. I want to profile the dynamic memory usage of my application: How many objects of each kind are there in the heap, and which functions created these objects? Also, how much memory is used by each of the object? Is there a simple way to do this? I am working on both linux and windows, so tools of any of the platforms would suffice. NOTE: I am not concerned with memory leaks here.

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• missing Axhost after using axImp.exe

  - by user311130

  Hey all, I want to use to connect with RDP from c# code. I have fpund a code_Guru code that does that but need AxMSTSCLib.dll as a reference. One of this dll member is Axhost. I'm using the command axImp.exe to create a AxMSTSCLib.dll: %%\aximp.exe %windir%\system32\mstscax.dll But there is no Axhost (check the object browser through visual studio). (here is my dll compared with the one which was donloaded from code-guru http://drop.io/hidden/eopb4tphk8qekl/asset/bm8tZ2V0LW9jeC1qcGc%253D http://drop.io/hidden/eopb4tphk8qekl/asset/Z2V0b2N4LTEtanBn ) Anyone knows why? and how can I fix that? or where should i ask this ver specific question? Regards,

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• Cocoa Memory Usage

  - by user288024

  I'm trying to track down some peculiar memory behavior in my Cocoa desktop app. My app does a lot of image processing using NSImage and uploads those images to a website over HTTP using NSURLConnection. After uploading several hundred images (some very large), when I run Instrument I get no leaks. I've also run through MallocDebug and get no leaks. When I dig into object allocations using Instrument I get output like this: GeneralBlock-9437184, Net Bytes 9437184, # Net 1 GeneralBlock-192512, Net Bytes 2695168, # Net 14 and etc., for smaller sizes. When I look at these in detail, they're marked as being owned by 'Foundation' and created via NSConcreteMutableData initWithCapacity. During HTTP upload I'm creating a post body using NSMutableData, so I'm guessing these are buffers Cocoa is caching for me when I create the NSMutableData objects. Is there a way to force Cocoa to free these? I'm 90% positive I'm releasing correctly (and Instruments and MallocDebug seem to confirm this), but I think Cocoa is keeping these around for perf reasons since I'm allocating so many MSMutableData buffers.

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• String Formatting Tricks/Docs

  - by Meltemi

  Was reading the response by Shaggy Frog to this post and was intrigued by the following line of code: NSLog(@"%@", [NSString stringWithFormat:@"%@:%*s%5.2f", key, padding, " ", [object floatValue]]); I know string formatting is an age old art but I'm kinda doing the end around into Cocoa/Obj-C programming and skipped a few grades along the way. Where is a good (best) place to learn all the string formatting tricks allowed in NSString's stringWithFormat? I'm familiar with Apple's String Format Specifiers page but from what I can tell it doesn't shed light on whatever is happening with %*s or the %5.2f (not to mention the 3 apparent placeholders followed by 4 arguments) above?!?

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• COM port cannot be opened in asp.net

  - by Pandiya Chendur

  I following this article for sending SMS it is a winform application.. I have referenced all the Dll's to my asp.net application..... I use an aspx page to detect a mobile device connected to a PC..... But it alwys shows COM 'n' Port could not be opened..... using SMS; using GsmComm.GsmCommunication; using GsmComm.PduConverter; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { GsmCommMain comm = new GsmCommMain(6, 9600, 300); comm.Open(); if (!comm.IsConnected()) { Response.Write("No Phone Connected"); } else { SmsSubmitPdu pdu = new SmsSubmitPdu("test", "+919999999999", ""); CommSetting.comm.SendMessage(pdu); } } }

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• Firebird Insert Distinct Data Using ZeosLib and Delphi

  - by Brad

  I'm using Zeos 7, and Delphi 2K9 and want to check to see if a value is already in the database under a specific field before I post the data to the database. Example: Field Keyword Values of Cheese, Mouse, Trap tblkeywordKEYWORD.Value = Cheese What is wrong with the following? And is there a better way? zQueryKeyword.SQL.Add('IF NOT EXISTS(Select KEYWORD from KEYWORDLIST ='''+ tblkeywordKEYWORD.Value+''')INSERT into KEYWORDLIST(KEYWORD) VALUES ('''+ tblkeywordKEYWORD.Value+'''))'); zQueryKeyword.ExecSql; I tried using the unique constraint in IB Expert, but it gives the following error: Invalid insert or update value(s): object columns are constrained - no 2 table rows can have duplicate column values. attempt to store duplicate value (visible to active transactions) in unique index "UNQ1_KEYWORDLIST". Thanks for any help -Brad

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• Disposables, Using & Try/Catch Blocks

  - by Aren B

  Having a mental block today, need a hand verifying my logic isn't fubar'ed. Traditionally I would do file i/o similar to this: FileStream fs = null; // So it's visible in the finally block try { fs = File.Open("Foo.txt", FileMode.Open); /// Do Stuff } catch(IOException) { /// Handle Stuff } finally { if (fs != null) fs.Close(); } However, this isn't very elegant. Ideally I'd like to use the using block to dispose of the filestream when I'm done, however I am unsure about the synergy between using and try/catch. This is how i'd like to implement the above: try { using(FileStream fs = File.Open("Foo.txt", FileMode.Open)) { /// Do Stuff } } catch(Exception) { /// Handle Stuff } However, I'm worried that a premature exit (via thrown exception) from within the using block may not allow the using block to complete execution and clean up it's object. Am I just paranoid, or will this actually work the way I intend it to?

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• Call stored procedure using Spring SimpleJdbcCall with callback

  - by MFIhsan

  I have an Oracle Stored procedure that takes CLOB input and REFCURSOR output. I invoke the SP via Spring SimpleJdbcCall passing in a RowMapper to map the results. However, since the result set is large, I need to provide callback feature to the client. I can't quite figure out how to add callback for an SP call using Spring - both with and without SimpleJdbcCall. One thought I have is to pass-in a RowCallbackHandler. Will this work or is there a better way to solve this problem? Any help here is appreciated. private Map<String, Object> arguments = ...; SimpleJdbcCall jdbcCall = new SimpleJdbcCall(this.jdbcTemplate) .withCatalogName(this.packageName) .withProcedureName(this.storedProcName) .withoutProcedureColumnMetaDataAccess() .declareParameters(this.outputParameters.toArray(new SqlOutParameter[]{})); if(!isEmpty(inputParameters)) { jdbcCall.declareParameters(inputParameters.toArray(new SqlParameter[]{})); } this.outputParameters.add(new SqlOutParameter(outputParamName, VARCHAR, rowMapper)); jdbcCall.execute(arguments);

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• CacheManager.getCacheFileBaseDir() always returns null

  - by Leon

  Hi, I've been trying to use the CacheManager for caching some http requests but it failed every time with a nullpointer exception. After some digging I believe I found out why: CacheManager.getCacheFileBaseDir() always returns null so when I try to use CacheManager.getCacheFile() or CacheManager.saveCacheFile() they fail. CacheManager.cacheDisabled() returns false :S I hadn 't created a cache partition via the AVD manager so I thought the problem lie there. But after creating a cache partition getCacheFile() still return null: 03-16 00:25:16.321: ERROR/AndroidRuntime(296): Caused by: java.lang.NullPointerException 03-16 00:25:16.321: ERROR/AndroidRuntime(296): at android.webkit.CacheManager.getCacheFile(CacheManager.java:296) What could be the problem? I've got the code posted here: http://pastebin.com/eaJwfXEK But it's a bit messy because I've been trying tons of stuff. Why does CacheManager.getCacheFileBaseDir() return null and not a File object? Thanks in advance! Leon

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• How do you give variables reference in javascript?

  - by Eric

  I want to give variables reference in javascript. For example, I want to do: a=1 b=a a=2 and have b=2, and change accordingly to a. Is this possible in javascript? If it isn't is there a way to do like a.onchange = function () {b=a}? What I wanted to do was make a function like makeobject which make an object and puts it in an array and than returns it like function makeobject() { objects[objects.length] = {blah:'whatever',foo:8}; } so than I could do a=makeobject() b=makeobject() c=makeobject() and later in the code do for (i in objects) { objects[i].blah = 'whatev'; } and also change the values of a,b and c

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• Iphone: UIWebview and double taps

  - by Eyal

  I would like to trap a double tap event in a UIWebView. I have derived a class from UIWebController. When I double tap it seams that the UIWebController itself is responding to my double taps instead of my class. The weird thing is that when I change the inheritance to inherit from UIView everything works just fine. Below are snippets from my code which is supposed to invoke a pop-up when double tapped. In the init function: //Setup action for double tap UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)]; tap.numberOfTapsRequired = 2; [super addGestureRecognizer:tap]; [tap release]; And Also: - (void)handleDoubleTap:(UIGestureRecognizer *)gestureRecognizer { UIAlertView *someError = [[UIAlertView alloc] initWithTitle: @"Network error" message: @"Hello" delegate: self cancelButtonTitle: @"Ok" otherButtonTitles: nil]; [someError show]; [someError release]; //[[NSNotificationCenter defaultCenter] postNotificationName:NOTIFICATION_FLIP_TO_PAGE_VIEW object:nil]; }

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• After minimizing app, on restore, windows pursues mouse pointer

  - by Nuno Silva

  Hi! I have an application in WPF C# where other than the purpose of what it's done, I customized the close and minimize buttons. The problem is that when I minimize, all is good, I cycle around all other apps, but, when I want to go back to the application, I click in the window in the taskbar, and the window pops up... But when it pops up, the window pursues the mouse pointer throughout the screen... The code i've implemented the the simplest it can be... private void Minimize_LeftMouseDown(object sender, MouseButtonEventArgs e) { this.WindowState = WindowState.Minimized; } Can you point me some directions? Thanks

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• Caching the xml response from a HttpHandler

  - by Blankman

  My HttpHandler looks like: public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/xml"; XmlWriter writer = new XmlTextWriter(context.Response.OutputStream, Encoding.UTF8); writer.WriteStartDocument(); writer.WriteStartElement("ProductFeed"); DataTable dt = GetStuff(); for(...) { } writer.WriteEndElement(); writer.WriteEndDocument(); writer.Flush(); writer.Close(); } How can I cache the entire xml document that I am generating? Or do I only have the option of caching the DataTable object?

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• assign logon scripts to local users

  - by user311130

  Hello, I wrote a c# code that creates new local user DirectoryEntry localMachine = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer"); DirectoryEntry group = localMachine.Children.Find("administrators", "group"); DirectoryEntry user = localMachine.Children.Find(accountName, "user"); Console.WriteLine(user.Properties.ToString()); I tried to set the logon script for that user by doing: localMachine.Properties["scriptPath"].Insert(0, "logonScript.vbs"); localMachine.CommitChanges(); same with group or user instances.but the property doesn't exist in any of theses instances (localMachine, group or user). I know that because I did: System.Collections.ICollection col = localMachine.Properties.PropertyNames; foreach (Object ob in col) { Console.WriteLine(ob.ToString()); } Any idea of how to do that in other way?Cheers,

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• Nhibernate Criteria Group By clause and select other data that is not grouped

  - by Peter R

  Hi, I have a parent child relationship, let's say class and children. Each child belongs to a class and has a grade. I need to select the children (or the ids of the children) with the lowest grade per class. session.CreateCriteria(typeof(Classs)) .CreateAlias("Children", "children") .SetProjection(Projections.ProjectionList() .Add(Projections.Min("children.Grade")) .Add(Projections.GroupProperty("Id")) ) .List<Object[]>(); This query returns me the lowest grade per class, but I don't know which child got the grade. When I add the children's Id to the group, the group is wrong and every child gets returned. I was hoping we could just select get the id's of those childs without grouping them. If this is not possible, then maybe there is a way to solve this with subqueries?

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• jni4net - how to set the absolute path to jni4net.j-0.7.1.0.jar

  - by w1z

  Guys, help me... I use jni4net in my WCF service. in the ctor of the service I try to create BridgeSetup object. var bridgeSetup = new BridgeSetup(false); bridgeSetup.AddAllJarsClassPath("."); Bridge.CreateJVM(bridgeSetup); As I understand in this moment jni4ne tryes to generate jni4net.j-0.7.1.0.dll from jni4net.j-0.7.1.0.jar. It tryes to find jni4net.j-0.7.1.0.jar near the jni4net.n-0.7.1.0.dll and can't. So I get next error... c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\fileprocessingservice\76f0fa69\5db44426\assembly\dl3\4fa263c6\f424b7fa_c8ccca01\jni4net.j-0.7.1.0.DLL Anybody know how to solve the problem? Thanks..

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• ASP.Net MVC view unable to see HtmlHelper extension method

  - by larryq

  Hi everyone, We're going through an ASP.Net MVC book and are having trouble with using an extenstion method within our view. The Extension method looks like this: using System; using System.Runtime.CompilerServices; using System.Web.Mvc; namespace MvcBookApplication { public static class HtmlHelperExtensions { public static string JQueryGenerator(this HtmlHelper htmlHelper, string formName, object model); } } We use the extension method in our view like this: <%=Html.JQueryGenerator("createmessage", ViewData.Model)%> The problem is, that line of code says JQueryGenerator isn't a recognized method of HtmlHelper. I believe we've got the correct references set in the web project, but are there other things we can check? There's no using statement for views, is there?

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• Inline editing of ManyToMany relation in Django

  - by vorpyg

  After working through the Django tutorial I'm now trying to build a very simple invoicing application. I want to add several Products to an Invoice, and to specify the quantity of each product in the Invoice form in the Django admin. Now I've to create a new Product object if I've got different quantites of the same Product. Right now my models look like this (Company and Customer models left out): class Product(models.Model): description = models.TextField() quantity = models.IntegerField() price = models.DecimalField(max_digits=10,decimal_places=2) tax = models.ForeignKey(Tax) class Invoice(models.Model): company = models.ForeignKey(Company) customer = models.ForeignKey(Customer) products = models.ManyToManyField(Product) invoice_no = models.IntegerField() invoice_date = models.DateField(auto_now=True) due_date = models.DateField(default=datetime.date.today() + datetime.timedelta(days=14)) I guess the quantity should be left out of the Product model, but how can I make a field for it in the Invoice model?

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• XAML trigger as StaticResource

  - by adrianm

  Why can't I create a trigger and use it as a static resource in XAML? <Window.Resources> <Trigger x:Key="ValidationTrigger" x:Shared="False" Property="Validation.HasError" Value="true"> <Setter Property="FrameworkElement.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=(Validation.Errors)/ErrorContent}"/> </Trigger> <Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}"> <Style.Triggers> <StaticResource ResourceKey="ValidationTrigger"/> </Style.Triggers> </Style> </Window.Resources> I get an errormessage at runtime "Value cannot be null. Parameter name: triggerBase Error at object 'System.Windows.Markup.StaticResourceHolder' in markup file"

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• rake jobs:work working fine. problem with script/delayed_job start.

  - by krunal shah

  I am calling function with LoadData.send_later(:test). LoadData is my class and test is my method. It's working fine while i am running rake jobs:work. But when i am running script/delayed_job start or run that time delayed_job.log shows error like TEastern Daylight Time: *** Starting job worker delayed_job host:KShah pid:5968 TEastern Daylight Time: * [Worker(delayed_job host:KShah pid:5968)] acquired lock on LoadData.load_test_data_with_delayed_job Could not load object for job: uninitialized constant LoadData TEastern Daylight Time: * [JOB] delayed_job host:KShah pid:5968 completed after 0.0310 TEastern Daylight Time: 1 jobs processed at 10.6383 j/s, 0 failed ... Any solution??

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• tinyMCE setup callback versus onAddEditor

  - by Matthew Manela

  When you initialize a tinyMCE editor I have noticed two different ways to get called when the editor is created. One way is using the setup callback that is part of tinyMCE.init: tinyMCE.init({ ... setup : function(ed) { // do things with editor ed } }); The other way is to hook up to the onAddEditor event: tinyMCE.onAddEditor.add(function(mgr,ed) { // do things with editor ed }); What are the differences between using these two methods? Is the editor in a different state in one versus the other? For example, are things not yet loaded if I try to access properties on the editor object. What are reasons to use one over the other?

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• Qt, unit testing and mock objects.

  - by Eye of Hell

  Hello. Qt framework has internal support for testing via QtTest package. Unfortunately, i didn't find any facilities in it that can assist in creating mock objects. Qt signals and slots offers a natural way to create a unit-testing friendly units with input (slots) and output (signals). But is it any easy way to test that calling specified slot in object will result in emitting correct signals with correct arguments? Of course i can manually create a mock objects and connect them to objects being tested, but it's a lot of code. Maybe it's some techniques exists that allows to somehow automate mock objects creation while unit-testing Qt-based applications?

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• How To find the location of any treeviewitem in silverlight

  - by user312772

  Hi I am new in silverlight 3. I want to find the location of any treeview Item . Although I applied this code GeneralTransform gt = ProjectTree.TransformToVisual(Application.Current.RootVisual as UIElement); Point offset = gt.Transform(new Point(0, 0)); double controlTop = offset.Y; double controlLeft = offset.X; Here Project tree is the root element of the treeview. This code is working But when I applied this for any child TreeViewelement of Treeview then an exception occurs "Value does not fall within the expected range." How to find the location of this child treeview element object

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