wndproc

问题 VS10: MCBS: Hi there, In the light of this discussion encountered a problem attempting a Hello World implementation of Raymond Chen's method in How can I make a WNDPROC or DLGPROC a member of my C++ class? using Pudeyev's code for "Hello World": error LNK2001: unresolved external symbol "private: long __thiscall BaseWnd::WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@BaseWnd@@AAEJPAUHWND__@@IIJ@Z) The code is as follows: // ...Written by Oleg Pudeyev, (c) 2003 #include

问题 I am trying to retrieve an IOleCommandTarget reference from a panel control handle, so that I can call IOleCommandTarget.Exec() on it. NativeMethods.IOleCommandTarget target = null; if (GetObjectFromHandle<NativeMethods.IOleCommandTarget>(panel.Handle, out target)) { Guid guidCmdGroup = commandID.Guid; handled = (target.Exec(ref guidCmdGroup, commandID.ID, 0, null, 0) == NativeMethods.S_OK); } private static bool GetObjectFromHandle<T>(IntPtr hwnd, out T value) { Guid guid = typeof(T).GUID;

问题 i have this abstract code : i want to use lParam (last parameter) in CreateWindowEx() to save a pointer to a class thats declared in the begining of main - SaveArr. then, i want to use it in the function WndProc. in the begining i did a global array, and then i could use it anywhere, but its not so "clever" as far as c++ concern, so im trying to upgrade it a bit. class Samples { int arr[ITERATIONS+1]; int index; ... } INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR

问题 I have a Window with a TextBox. The cursor is inside the TextBox. If I press a key, then I receive a message in WndProc (for KeyUp and KeyDown). But if I set e.Handled = true in the KeyUp and KeyDown events, then I don't receive any key messages: public partial class MainWindow : Window { public MainWindow() { Loaded += MainWindow_Loaded; } private void MainWindow_Loaded(object sender, RoutedEventArgs e) { var textBox = new TextBox(); textBox.KeyDown += TextBox_KeyDown; textBox.KeyUp +=

问题 I am looking for a solution to programmatically hold a keyboard key down during some time (I don't know how many time). I think that if I send a WM_KEYDOWN message the key will be held down until WM_KEYUP is send, but I am not sure. I would test it. But I need to go and I don't have much time. I want to see if someone already tested this. Here is an other question I posted, related to this one. I want to make a virtual keyboard. Do I need to send WM_KEYDOWN to the current active window or

问题 I like to have my form borderless in C#. So I used this code: FormBorderStyle = FormBorderStyle.None; But it removes the aero effect of windows 8. The form opens suddenly like a blink. How can i bring the aero effect back? 回答1: I am answering my own question using the C++ reference I wrote a class inherited from Form Class. Each form in application should be inherited from this class instead of Form Class. public class AeroForm : Form { int _w = 100, _h = 100; bool aero = false; [StructLayout

问题 I'll go ahead and give a summary to this, how can I use a dialog procedure that is a member of a class? I am creating a window wrapper class, but CreateDialogParam needs a global dialog procedure, so I tried this workaround: I have done a bit of searching on this topic. I am making a Dialog class which I am subclassing to make a CMainWnd and then instantiating that. In the Dialog class I have a member function defined as INT_PTR CALLBACK Dialog::cb_proc(HWND,UINT,WPARAM,LPARAM) . Now, I know

问题 I'm trying to write a better (I think is better) and reusable WndProc procedure, but the code below does not work because when I add more arguments to the sub firm it says that the sub does not accept that amount of arguments, of course that is reasonable. But I know that this trick can be done because I've seen this same wndproc sub with a lot of custom arguments time ago in some thirdparty classes which I don't remember where I've seen neither I don't remember how them did the trick. Then,

问题 I asked a question, and some people commented that my question wasn't clear, So here is a new one. I'm trying to create an application with multiple windows using the WIN32 API. I created two windows, one is a child of the parent. Then i have a message loop, But unfortunately only the parent WndProc gets message, while the child does not. - that is the wndProc is being called only once instead of twice. ( is that the expected behaviour? ) I also tried creating another WndProcChild Function

问题 I am making an app that simulates a keyboard. I will do it by sending WM_KEYDOWN to a window, but I am not sure where to send the message. to the currently active window or to HWND_BROADCAST? Here is an other question I posted, related to this one. If I send a WM_KEYDOWN message (using wndproc) will the computer hold the key down until I send WM_KEYUP? 回答1: If make a generic virtual keyboard and not worry about which window is active (which is the window manager's business), you can use