windows-messages

I'm creating a hidden window for the purpose of handling messages. I'm experiencing that I do not receive WM_POWERBROADCAST messages in it's GetMessage loop. I do, however, receive it via my WNDPROC. I have confirmed that I do receive other messages in both locations. Why is GetMessage not receiving WM_POWERBROADCAST? WNDCLASSEX classInfo = {0}; classInfo.cbSize = sizeof(classInfo); classInfo.style = WS_DISABLED; // CustomWndProc just outputs the message and chains to DefaultWndProc classInfo.lpfnWndProc = CustomWndProc; classInfo.hInstance = GetModuleHandle(NULL); classInfo.hCursor = NULL;

I am trying to auto fill in values in the C# webbrowser control and tab and enter and press up and down to move through the fields. Here is my PInvoke and wrapper functions. I used Spy++ to get these in Internet Explorer. Does anyone see anything wrong with my definitions? I want to use Send and Post message instead of SendInput because I don't want to have to focus the window... [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] static extern bool PostMessage(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam); [DllImport("user32.dll")] static extern int SendMessage(IntPtr

I'm working on an application that simulates a Windows mouse based on other behavior. One example is that pressing the + or - keys on the keyboard sends the WM_MOUSEWHEEL message to a target window with an appropriate delta. The problem is that in some situations I'm having a hard time replicating the messages that i think windows is sending to the target application. Are there any ways to record windows messages sent to a specific window (hopefully with a filter for which messages I want to catch) and then review that data later? RichieHindle If you have Visual Studio, that comes with Spy++,

When a user double-clicks a dbgrid, I show a non-modal form. When they close that form, I want to refresh the grid. To accomplish that, I have tried the following: 1 - Define a custom message constant: const WM_REFRESH_MSG = WM_USER + 1; //defined in a globally available unit 2 - In the OnClose event of my non-modal form, I have this: procedure TMyNonModalForm.FormClose(Sender: TObject; var Action: TCloseAction); begin PostMessage(Self.Handle,WM_REFRESH_MSG,0,0); end; 3 - In the private declarations of the form that holds the dbGrid, I have this: procedure OnRefreshRequest(var Msg: TMessage);