Win32 Message (MSG) Message Processing, messagemsg

Source: Internet
Author: User

Win32 Message (MSG) Message Processing, messagemsg

In general, the message processing is as follows. TranslateMessage converts virtual-keys messages to characters messages, and DispatchMessage schedules a message to the window program.

// The second parameter of getMessage is HWND, which is set to NULL here. // if it is set to hwnd, the message WM_DESTROY will not respond to while (getMessage (& msg, NULL) {TranslateMessage (& msg); DiapatchMessage (& msg );}

If the window contains a non-modal dialog box, you need to use IsDialogMessage to determine whether the message is a specific dialog box and process it.

while(getMessage(&msg,NULL,0,0){    if(hDlgModeless==0||IsDialogMessage(hDlgModeless,&msg)   {        TranslateMessage(&msg);        DiapatchMessage(&msg);     }

To process the shortcut key, you must use the TranslateAccelerator to process the shortcut key message in advance.

while (GetMessage(&msg, NULL, 0, 0))    {        if (hDlgModeless == 0 || !IsDialogMessage(hDlgModeless, &msg))        {            if (!TranslateAccelerator(hwnd, hAccel, &msg))            {                TranslateMessage(&msg);                DispatchMessage(&msg);            }        }    }


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