invoke

Using C# 2.0 and the MethodInvoker delegate, I have a GUI application receiving some event from either the GUI thread or from a worker thread. I use the following pattern for handling the event in the form: private void SomeEventHandler(object sender, EventArgs e) { MethodInvoker method = delegate { uiSomeTextBox.Text = "some text"; }; if (InvokeRequired) BeginInvoke(method); else method.Invoke(); } By using this pattern I do not duplicate the actual UI code but what I'm not sure about is if this method is good. In particular, the line method.Invoke() does it use another thread for invoking or

I wonder if there is a simple way to call a function from a string. I know a simple way, using 'if' and 'else'. int function_1(int i, int j) { return i*j; } int function_2(int i, int j) { return i/j; } ... ... ... int function_N(int i, int j) { return i+j; } int main(int argc, char* argv[]) { int i = 4, j = 2; string function = "function_2"; cout << callFunction(i, j, function) << endl; return 0; } This is the basic approach int callFunction(int i, int j, string function) { if(function == "function_1") { return function_1(i, j); } else if(function == "function_2") { return function_2(i, j); }

With the help of people on stackoverflow I was able to get the following working code of a simple GUI countdown (which just displays a window counting down seconds). My main problem with this code is the invokeLater stuff. As far as I understand invokeLater , it sends a task to the event dispatching thread (EDT) and then the EDT executes this task whenever it "can" (whatever that means). Is that right? To my understanding, the code works like this: In the main method we use invokeLater to show the window ( showGUI method). In other words, the code displaying the window will be executed in the

I have the following function in a C++ DLL extern "C" __declspec(dllexport) bool Exist(const char* name) { //if (g_Queues.find(name) != g_Queues.end()) // return true; //else // return false; return false; } Inside my C# class I have the following: [DllImport("Whisper.dll", EntryPoint="Exist", CallingConvention=CallingConvention.Cdecl)] public static extern bool Exist(string name); Yet, whenever I call my function it ALWAYS returns true, even when I commented out my little function and made it return false. I have the feeling there is something wrong with my calling convention or any other

I would like to invoke a private static method. I have its name. I've heard it can be done using Java reflection mechanism. How can I do it? EDIT: One problem I encountered when trying to invoke the method is how to specify the type of its argument. My method receives one argument and its type is Map. Therefore I cannot do Map<User, String>.TYPE (In run time there's no such a thing as Map because of Java Type erasure). Is there another way to get the method? Let's say you want to call MyClass.myMethod(int x); Method m = MyClass.class.getDeclaredMethod("myMethod", Integer.TYPE); m.setAccessible

I'm building a chat client and am not 100% sure on how to use the dispatcher . So the question is I have a method as such: public void LostConnection() { myGUI.chatBox.AppendText("Lost connection to room: "+ myGUI.UsernameText.ToString() + "\r\n"); } Do i need to surrond the statement within (myGUI.chatBox... ) with a Dispatcher.Invoke ? I appreciate any help. Ricibob Your app has a main UI thread (usually ManagedThreadId==1 ). Typically in a chat app your events will come in on other threads (either dedicated socket listen threads or thread pool threads from listening code). If you want to