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  • Is passing NULL param exactly the same as passing no param

    - by park
    I'm working with a function whose signature looks like this afunc(string $p1, mixed $p2, array $p3 [, int $p4 = SOM_CONST [, string $p5 ]] ) In some cases I don't have data for the last parameter $p5 to pass, but for the sake of consistency I still want to pass something like NULL. So my question, does PHP treat passing a NULL exactly the same as not passing anything? somefunc($p1, $p2, $p3, $p4 = SOM_CONST); somefunc($p1, $p2, $p3, $p4 = SOM_CONST, NULL);

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  • How to access static members in a Velocity template?

    - by matt b
    I'm not sure if there is a way to do this in Velocity or not: I have a User POJO which a property named Status, which looks like an enum (but it is not, since I am stuck on Java 1.4), the definition looks something like this: public class User { // default status to User private Status status = Status.USER; public void setStatus(Status status) { this.status = status; } public Status getStatus() { return status; } And Status is a static inner class: public static final class Status { private String statusString; private Status(String statusString) { this.statusString = statusString; } public final static Status USER = new Status("user"); public final static Status ADMIN = new Status("admin"); public final static Status STATUS_X = new Status("blah"); //.equals() and .hashCode() implemented as well } With this pattern, a user status can easily be tested in a conditional such as if(User.Status.ADMIN.equals(user.getStatus())) ... ... without having to reference any constants for the status ID, any magic numbers, etc. However, I can't figure out how to test these conditionals in my Velocity template with VTL. I'd like to just print a simple string based upon the user's status, such as: Welcome <b>${user.name}</b>! <br/> <br/> #if($user.status == com.company.blah.User.Status.USER) You are a regular user #elseif($user.status == com.company.blah.User.Status.ADMIN) You are an administrator #etc... #end But this throws an Exception that looks like org.apache.velocity.exception.ParseErrorException: Encountered "User" at webpages/include/dashboard.inc[line 10, column 21] Was expecting one of: "[" ... From the VTL User Guide, there is no mention of accessing a Java class/static member directly in VTL, it appears that the right hand side (RHS) of a conditional can only be a number literal, string literal, property reference, or method reference. So is there any way that I can access static Java properties/references in a Velocity template? I'm aware that as a workaround, I could embed the status ID or some other identifier as a reference in my controller (this is a web MVC application using Velocity as the View technology), but I strongly do not want to embed any magic numbers or constants in the view layer.

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  • Can I call make runtime decided method calls in Java?

    - by Catalin Marin
    I know there is an invoke function that does the stuff, I am overall interested in the "correctness" of using such a behavior. My issue is this: I have a Service Object witch contains methods which I consider services. What I want to do is alter the behavior of those services without later intrusion. For example: class MyService { public ServiceResponse ServeMeDonuts() { do stuff... return new ServiceResponse(); } after 2 months I find out that I need to offer the same service to a new client app and I also need to do certain extra stuff like setting a flag, or make or updating certain data, or encode the response differently. What I can do is pop it up and throw down some IFs. In my opinion this is not good as it means interaction with tested code and may result in un wanted behaviour for the previous service clients. So I come and add something to my registry telling the system that the "NewClient" has a different behavior. So I'll do something like this: public interface Behavior { public void preExecute(); public void postExecute(); } public class BehaviorOfMyService implements Behavior{ String method; String clientType; public void BehaviorOfMyService(String method,String clientType) { this.method = method; this.clientType = clientType; } public void preExecute() { Method preCall = this.getClass().getMethod("pre" + this.method + this.clientType); if(preCall != null) { return preCall.invoke(); } return false; } ...same for postExecute(); public void preServeMeDonutsNewClient() { do the stuff... } } when the system will do something like this if(registrySaysThereIs different behavior set for this ServiceObject) { Class toBeCalled = Class.forName("BehaviorOf" + usedServiceObjectName); Object instance = toBeCalled.getConstructor().newInstance(method,client); instance.preExecute(); ....call the service... instance.postExecute(); .... } I am not particularly interested in correctness of code as in correctness of thinking and approach. Actually I have to do this in PHP, witch I see as a kind of Pop music of programming which I have to "sing" for commercial reasons, even though I play POP I really want to sing by the book, so putting aside my more or less inspired analogy I really want to know your opinion on this matter for it's practical necessity and technical approach. Thanks

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  • How to access and work with XML from API in C#

    - by Jarek
    My goal is to pull XML data from the API and load it to a sql server database. The frist step I'm attempting here is to access the data and display it. Once I get this to work I'll loop through each row and insert the values into a sql server database. When I try to run the code below nothing happens and when I paste the url directly into the browser I get this error "2010-03-08 04:24:17 Wallet exhausted: retry after 2010-03-08 05:23:58. 2010-03-08 05:23:58" To me it seems that every iteration of the foreach loop makes a call to the site and I get blocked for an hour. Am I retrieving data from the API in an incorrect manner? Is there some way to load the data into memory or an array then loop through that? Here's the bit of code I hacked together. using System; using System.Data.SqlClient; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Xml; using System.Data; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { try { string userID = "123"; string apiKey = "abc456"; string characterID = "789"; string url = "http://api.eve-online.com/char/WalletTransactions.xml.aspx?userID=" + userID + "&apiKey=" + apiKey + "&characterID=" + characterID; XmlDocument xmldoc = new XmlDocument(); xmldoc.Load(url); XmlNamespaceManager xnm1 = new XmlNamespaceManager(xmldoc.NameTable); XmlNodeList nList1 = xmldoc.SelectNodes("result/rowset/row", xnm1); foreach (XmlNode xNode in nList1) { Response.Write(xNode.InnerXml + "<br />"); } } catch (SqlException em) { Response.Write(em.Message); } } } Here's a sample of the xml <eveapi version="2"> <currentTime>2010-03-06 17:38:35</currentTime> <result> <rowset name="transactions" key="transactionID" columns="transactionDateTime,transactionID,quantity,typeName,typeID,price,clientID,clientName,stationID,stationName,transactionType,transactionFor"> <row transactionDateTime="2010-03-06 17:16:00" transactionID="1343566007" quantity="1" typeName="Co-Processor II" typeID="3888" price="1122999.00" clientID="1404318579" clientName="unseenstrike" stationID="60011572" stationName="Osmeden IX - Moon 6 - University of Caille School" transactionType="sell" transactionFor="personal" /> <row transactionDateTime="2010-03-06 17:15:00" transactionID="1343565894" quantity="1" typeName="Co-Processor II" typeID="3888" price="1150000.00" clientID="1404318579" clientName="unseenstrike" stationID="60011572" stationName="Osmeden IX - Moon 6 - University of Caille School" transactionType="sell" transactionFor="personal" /> </rowset> </result> <cachedUntil>2010-03-06 17:53:35</cachedUntil> </eveapi>

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  • Namespaces and deserialization issue

    - by CaffGeek
    UPDATE: You can run the code at the end of this to recreate and see the error I am having and hopefully solve it! UPDATE2: It's not the removal of the xmlns="" that's the issue... as you can remove it from the initial xml string. The problem is with the [XmlType(TypeName = "Systems")] somehow causing it to be added... UPDATE3: Turns out the problem is in here, I need to set the TypeName based on what is in the existing, XmlTypeAttribute if it already exists on the class.... xmlAttributes.XmlType = new XmlTypeAttribute { Namespace = "" }; I get the following XML as a string from a webservice <Systems xmlns=""> <System id="1"> <sys_name>ALL</sys_name> </System> <System id="2"> <sys_name>asdfasdf</sys_name> </System> <System id="3"> <sys_name>fasdfasf</sys_name> </System> <System id="4"> <sys_name>asdfasdfasdf</sys_name> </System> </Systems> I then execute this, to convert it to an object result = XElement.Parse(xmlResult.OuterXml).Deserialize<AwayRequestSystems>(); Strangely though, in the Deserialize method, while the RemoveAllNamespaces works and returns the xml without the namespace I get the error <Systems xmlns=''> was not expected. in the catch when return (T) serializer.Deserialize(reader); executes! Why is it doing this? The xmlns is GONE!!! EXECUTABLE CODE! (Just put it in a test project) using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Xml; using System.Xml.Linq; using Microsoft.VisualStudio.TestTools.UnitTesting; using System.Xml.Serialization; namespace DeserializationTest { [TestClass] public class UnitTest1 { public TestContext TestContext { get; set; } [TestMethod] public void RemoveXmlnsFromSystems() { var xml = XElement.Parse(@"<Systems xmlns=""""> <System id=""1""> <sys_name>ALL</sys_name> </System> <System id=""2""> <sys_name>ePO</sys_name> </System> <System id=""3""> <sys_name>iEFT</sys_name> </System> <System id=""4""> <sys_name>Away Requests</sys_name> </System> <System id=""5""> <sys_name>RP3</sys_name> </System> </Systems>"); var systems = xml.Deserialize<AwayRequestSystems>(); Assert.IsInstanceOfType(systems, typeof(AwayRequestSystems)); var xmlnsFree = xml.RemoveAllNamespaces(); var str = xmlnsFree.ToString(); Debug.WriteLine(str); Assert.AreNotEqual("Error", xmlnsFree.Name.ToString(), "Serialization Error"); Assert.IsFalse(str.Contains("xmlns"), "Xmlns still exists"); } } [XmlType(TypeName = "Systems")] public class AwayRequestSystems : List<AwayRequestSystem> { } [XmlType(TypeName = "System")] public class AwayRequestSystem { [XmlAttribute("id")] public int ID { get; set; } [XmlElement("sys_name")] public string Name { get; set; } } public static class XmlSerializerFactory { private static Dictionary<Type, XmlSerializer> _serializers = new Dictionary<Type, XmlSerializer>(); public static void ResetCache() { _serializers = new Dictionary<Type, XmlSerializer>(); } public static XmlSerializer GetSerializerFor(Type typeOfT) { if (!_serializers.ContainsKey(typeOfT)) { var xmlAttributes = new XmlAttributes(); var xmlAttributeOverrides = new XmlAttributeOverrides(); Debug.WriteLine(string.Format("XmlSerializerFactory.GetSerializerFor(typeof({0}));", typeOfT)); xmlAttributes.XmlType = new XmlTypeAttribute { Namespace = "" }; xmlAttributes.Xmlns = false; var types = new List<Type> { typeOfT, typeOfT.BaseType }; foreach (var property in typeOfT.GetProperties()) { types.Add(property.PropertyType); } types.RemoveAll(t => t.ToString().StartsWith("System.")); foreach (var type in types) { if (xmlAttributeOverrides[type] == null) xmlAttributeOverrides.Add(type, xmlAttributes); } var newSerializer = new XmlSerializer(typeOfT, xmlAttributeOverrides); //var newSerializer = new XmlSerializer(typeOfT, xmlAttributeOverrides, types.ToArray(), new XmlRootAttribute(), string.Empty); //var newSerializer = new XmlSerializer(typeOfT, string.Empty); _serializers.Add(typeOfT, newSerializer); } return _serializers[typeOfT]; } } public static class XElementExtensions { public static XElement RemoveAllNamespaces(this XElement source) { if (source.HasAttributes) source.Attributes().Where(a => a.Name.LocalName.Equals("xmlns")).Remove(); return source.HasElements ? new XElement(source.Name.LocalName, source.Attributes()/*.Where(a => !a.Name.LocalName.Equals("xmlns"))*/, source.Elements().Select(el => RemoveAllNamespaces(el)) ) : new XElement(source.Name.LocalName) { Value = source.Value }; } } public static class SerializationExtensions { public static XElement Serialize(this object source) { try { var serializer = XmlSerializerFactory.GetSerializerFor(source.GetType()); var xdoc = new XDocument(); using (var writer = xdoc.CreateWriter()) { serializer.Serialize(writer, source, new XmlSerializerNamespaces(new[] { new XmlQualifiedName("", "") })); } var result = (xdoc.Document != null) ? xdoc.Document.Root : new XElement("Error", "Document Missing"); return result.RemoveAllNamespaces(); } catch (Exception x) { return new XElement("Error", x.ToString()); } } public static T Deserialize<T>(this XElement source) where T : class { //try //{ var serializer = XmlSerializerFactory.GetSerializerFor(typeof(T)); var cleanxml = source.RemoveAllNamespaces(); var reader = cleanxml.CreateReader(); return (T)serializer.Deserialize(reader); //} //catch (Exception x) //{ // return null; //} } } }

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  • preg_match problem.

    - by SoLoGHoST
    How do I add the character - within the preg_match? preg_match('#^(\w+/){0,2}\w+\.\w+$#', $string) But it must be before the . within string. I've tried just about everything I know here. I know that the - needs to be escaped. So I tried to escape it in various places, but it's not working :( Thanks :)

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  • MVC validation error with strongly typed view

    - by Remnant
    I have a simple form that I would like to validate on form submission. Note I have stripped out the html for ease of viewing <%=Html.TextBox("LastName", "")%> //Lastname entry <%=Html.ValidationMessage("LastName")%> <%=Html.TextBox("FirstName", "")%>//Firstname entry <%=Html.ValidationMessage("FirstName")%> <%=Html.DropDownList("JobRole", Model.JobRoleList)%> //Dropdownlist of job roles <% foreach (var record in Model.Courses) // Checkboxes of different courses for user to select { %> <li><label><input type="checkbox" name="Courses" value="<%=record.CourseName%>" /><%= record.CourseName%></label></li> <% } %> On submission of this form I would like to check that both FirstName and LastName are populated (i.e. non-zero length). In my controller I have: public ActionResult Submit(string FirstName, string LastName) { if (FirstName.Trim().Length == 0) ModelState.AddModelError("FirstName", "You must enter a first name"); if (LastName.Trim().Length == 0) ModelState.AddModelError("LastName", "You must enter a first name"); if (ModelState.IsValid) { //Update database + redirect to action } return View(); //If ModelState not valid, return to View and show error messages } Unfortunately, this code logic produces an error that states that no objects are found for JobRole and Courses. If I remove the dropdownlist and checkboxes then all works fine. The issue appears to be that when I return the View the view is expecting objects for the dropwdownlist and checkboxes (which is sensible as that is what is in my View code) How can I overcome this problem? Things I have considered: In my controller I could create a JobRoleList object and Course object to pass to the View so that it has the objects to render. The issue with this is that it will overwrite any dropdownlist / checkbox selections that the user has already made. In the parameters of my controller method Submit I could aslo capture the JobRoleList object and Course object to pass back to the View. Again, not sure this would capture any items the user has already selected. I have done much googling and reading but I cannot find a good answer. When I look at examples in books or online (e.g. Nerddinner) all the validation examples involve simple forms with TextBox inputs and don't seems to show instances with multiple checkboxes and dropdownlists. Have I missed something obvious here? What would be best practice in this situation? Thanks

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  • Active User Tracking, PHP Sessions

    - by Nik
    Alright, I'm trying to work on a function for active user counting in an AJAX based application. I want to express the below SQL Query in correct syntax but I'm not sure how to write it. The desired SQL Query is below: SELECT count(*) FROM active WHERE timestamp > time() - 1800 AND nick=(a string that doesn't contain [AFK]) Now, I do understand that time() - 1800 can be assigned to a variable, but how is timestamp > variable and nick that doesn't contain a string written in SQL?

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  • Does this PHP function protect against SQL injection?

    - by George Edison
    I have this function I'm using and I want to be sure that it fully protects against SQL injection attacks: function MakeSafeForQuery($string) { // replace all of the quote // chars by their escape sequence $ret = str_replace("\\","\\\\",$string); $ret = str_replace("'","\\'",$ret); $ret = str_replace("\"","\\\"",$ret); return $ret; } Am I missing anything serious?

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  • Is this a Java DateFormat bug?

    - by anonymous
    The pattern is "dd-MM-yyyy" I think the string "01-01-2010mwwwwwwwwwwwwwww" does not satisfy the pattern, but the following code shows the contrary. Anyone can explain why? public static void main(String[] args) throws Exception { SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy"); Date date = df.parse("01-01-2010mwwwwwwwwwwwwwww"); System.out.println(date); } Thanks

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  • jquery version of array.contains

    - by morgancodes
    Can jquery test an array for the presence of an object (either as part of the core functionality or via an avaible plugin). Also, I'm looking for something like array.remove, which would remove a given object from an array. Can jquery handle this for me? thanks, -Morgan

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  • Java Apache Commons users

    - by Tom Brito
    Is there anything in apache commons to convert a Object to byte array, like the following method does? public static byte[] toByteArray(Object obj) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(obj); oos.flush(); byte[] data = baos.toByteArray(); return data; } [try-finally block closing buffers were omitted to simplify]

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  • how to use MessageParameterAttribute in wcf

    - by Archie
    hello, I wanted to know what is the use the MessageParameterAttribute in wcf. In my function: [OperationContract] public float GetAirfare( [MessageParameter(Name=”fromCity”)] string originCity, [MessageParameter(Name=”toCity”)] string destinationCity); I dont use fromCity or toCity anywhere in the implementation or even while using a service. Then whats the point in giving it a name?

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  • Can I somehow know which replacement is taking place from within a callback of preg_replace_callback

    - by jayarjo
    I'm using preg_replace_callback to substitute particular tokens within the string. But apart from actual token I need to know as well whether that token was first, second or third in a subject string. Is there any way to access that info? I found an argument $count in preg_replace_callback definition (http://php.net/manual/en/function.preg-replace-callback.php), which counts replacements, but I'm not sure if it is accessible from within callback. Any example of the usage in described context?

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  • c# Resize Function

    - by Tyler
    So my logic is flawed and I need a better and correct way to resize an image in my c# app I need a function similar to this setup public void ResizeImageForWeb(string OriginalFile, string NewFile, int MaxWidth, int MaxHeight, int Quality) { // Resize Code } Basically, I'm a web designer lost trying to programming a desktop app.

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  • What is the best way to store incremental downloaded data?

    - by afriza
    Inspired by Chromium's sha1 class, I am thinking to store incrementally downloaded data using std::string // pseudo-code char buff[BUFF_SIZE]; std::string data; do { size = ReadInternetFileTo(buff,BUFF_SIZE); data.append(buff,size); } while (not_finished); Any foreseeable problems with this method or better way to do it?

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  • Crash in OS X Core Data Utility Tutorial

    - by vinogradov
    I'm trying to follow Apple's Core Data utility Tutorial. It was all going nicely, until... The tutorial uses a custom sub-class of NSManagedObject, called 'Run'. Run.h looks like this: #import <Foundation/Foundation.h> #import <CoreData/CoreData.h> @interface Run : NSManagedObject { NSInteger processID; } @property (retain) NSDate *date; @property (retain) NSDate *primitiveDate; @property NSInteger processID; @end Now, in Run.m we have an accessor method for the processID variable: - (void)setProcessID:(int)newProcessID { [self willChangeValueForKey:@"processID"]; processID = newProcessID; [self didChangeValueForKey:@"processID"]; } In main.m, we use functions to set up a managed object model and context, instantiate an entity called run, and add it to the context. We then get the current NSprocessInfo, in preparation for setting the processID of the run object. NSManagedObjectContext *moc = managedObjectContext(); NSEntityDescription *runEntity = [[mom entitiesByName] objectForKey:@"Run"]; Run *run = [[Run alloc] initWithEntity:runEntity insertIntoManagedObjectContext:moc]; NSProcessInfo *processInfo = [NSProcessInfo processInfo]; Next, we try to call the accessor method defined in Run.m to set the value of processID: [run setProcessID:[processInfo processIdentifier]]; And that's where it's crashing. The object run seems to exist (I can see it in the debugger), so I don't think I'm messaging nil; on the other hand, it doesn't look like the setProcessID: message is actually being received. I'm obviously still learning this stuff (that's what tutorials are for, right?), and I'm probably doing something really stupid. However, any help or suggestions would be gratefully received! ===MORE INFORMATION=== Following up on Jeremy's suggestions: The processID attribute in the model is set up like this: NSAttributeDescription *idAttribute = [[NSAttributeDescription alloc]init]; [idAttribute setName:@"processID"]; [idAttribute setAttributeType:NSInteger32AttributeType]; [idAttribute setOptional:NO]; [idAttribute setDefaultValue:[NSNumber numberWithInteger:-1]]; which seems a little odd; we are defining it as a scalar type, and then giving it an NSNumber object as its default value. In the associated class, Run, processID is defined as an NSInteger. Still, this should be OK - it's all copied directly from the tutorial. It seems to me that the problem is probably in there somewhere. By the way, the getter method for processID is defined like this: - (int)processID { [self willAccessValueForKey:@"processID"]; NSInteger pid = processID; [self didAccessValueForKey:@"processID"]; return pid; } and this method works fine; it accesses and unpacks the default int value of processID (-1). Thanks for the help so far!

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  • Decrypting data from a secure socket

    - by Ronald
    I'm working on a server application in Java. I've successfully got past the handshake portion of the communication process, but how do I go about decrypting my input stream? Here is how I set up my server: import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.ArrayList; import java.util.HashMap; import javax.net.ServerSocketFactory; import javax.net.ssl.SSLServerSocket; import javax.net.ssl.SSLServerSocketFactory; import org.json.me.JSONException; import dictionary.Dictionary; public class Server { private static int port = 1234; public static void main(String[] args) throws JSONException { System.setProperty("javax.net.ssl.keyStore", "src/my.keystore"); System.setProperty("javax.net.ssl.keyStorePassword", "test123"); System.out.println("Starting server on port: " + port); HashMap<String, Game> games = new HashMap<String, Game>(); final String[] enabledCipherSuites = { "SSL_RSA_WITH_RC4_128_SHA" }; try{ SSLServerSocketFactory socketFactory = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault(); SSLServerSocket listener = (SSLServerSocket) socketFactory.createServerSocket(port); listener.setEnabledCipherSuites(enabledCipherSuites); Socket server; Dictionary dict = new Dictionary(); Game game = new Game(dict); //for testing, creates 1 global game. while(true){ server = listener.accept(); ClientConnection conn = new ClientConnection(server, game, "User"); Thread t = new Thread(conn); t.start(); } } catch(IOException e){ System.out.println("Failed setting up on port: " + port); e.printStackTrace(); } } } I used a BufferedReader to get the data send from the client: BufferedReader d = new BufferedReader(new InputStreamReader(socket.getInputStream())); After the handshake is complete it appears like I'm getting encrypted data. I did some research online and it seems like I might need to use a Cipher, but I'm not sure. Any ideas?

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  • Reading XML by Dataset

    - by Sathish
    I using a dataset to read an xml file as shown below DataSet ds = new DataSet(); ds.ReadXml("C:\test.xml"); test.xml contains OMID Yes AssumptOMID int 10 ClientName Yes AssumptClient string 50 OppName Yes AssumptProjectName string 50 now i want to read fieldInfo in one dataset/datatable and settings in another dataset/datatable Please help me with the code

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  • Silverlight 4.0: How to convert byte[] to image?

    - by xscape
    public Image Base64ToImage(string base64String) { // Convert Base64 String to byte[] byte[] imageBytes = Convert.FromBase64String(base64String); MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length); // Convert byte[] to Image ms.Write(imageBytes, 0, imageBytes.Length); System.Drawing.Image image = System.Drawing.Image.FromStream(ms, true); return image; } I want to convert byte[] to image, however System.Drawing.Image is not supported in Silverlight. Any alternative?

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  • How can I pass managed objects from one AppDomain to another?

    - by Dennis P
    I have two assemblies that I'm trying to link together. One is a sort of background process that's built with WinForms and will be designed to run as a Windows Service. I have a second project that will act as a UI for the background process whenever a user launches it. I've never tried attempting something like this with managed code before, so I've started trying to use windows messages to communicate between the two processes. I'm struggling when it comes to passing more than just IntPtrs back and forth, however. Here's the code from a control in my UI project that registers itself with the background process: public void Init() { IntPtr hwnd = IntPtr.Zero; Process[] ps = Process.GetProcessesByName("BGServiceApp"); Process mainProcess = null; if(ps == null || ps.GetLength(0) == 0) { mainProcess = LaunchApp(); } else { mainProcess = ps[0]; } SendMessage(mainProcess.MainWindowHandle, INIT_CONNECTION, this.Handle, IntPtr.Zero); } protected override void WndProc(ref Message m) { if(m.Msg == INIT_CONFIRMED && InitComplete != null) { string message = Marshal.PtrToStringAuto(m.WParam); Marshal.FreeHGlobal(m.WParam); InitComplete(message, EventArgs.Empty); } base.WndProc(ref m); } This is the code from the background process that's supposed to receive a request from the UI process to register for status updates and send a confirmation message. protected override void WndProc(ref Message m) { if(m.Msg == INIT_CONNECTION) { RegisterUIDispatcher(m.WParam); Respond(m.WParam); } if(m.Msg == UNINIT_CONNECTION) { UnregisterUIDispatcher(m.WParam); if(m_RegisteredDispatchers.Count == 0) { this.Close(); } } base.WndProc(ref m); } private void Respond(IntPtr caller) { string test = "Registration confirmed!"; IntPtr ptr = Marshal.StringToHGlobalAuto(test); SendMessage(caller, INIT_CONFIRMED, ptr, IntPtr.Zero); } } The UI process receives the INIT_CONFIRMED message from my background process, but when I try to marshal the IntPtr back into a string, I get an empty string. Is the area of heap I'm using out of scope to the other process or am I missing some security attribute maybe? Is there a better and cleaner way to go about something like this using an event driven model?

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