So I have a C++ dll, that I am using in my c# application, for monitoring Windows Messages. I want to know if WM_CLOSE and WM_QUERYENDSESSION are send because I can't see that from a C# application. If I get one of these messages, I want to do some cleanup with my files but the problem is when I kill it with TM the functions don't work. It seams that I don't get the messages. I think the problem is that Task Manager sends a message to the C# app and not to the c++ dll.
Some Code:
c++:
typedef void (*CLOSING_FUNCTION)();
CLOSING_FUNCTION myClosingFunction;
typedef void (*SHUTDOWN_FUNCTION)();
SHUTDOWN_FUNCTION myShutdownFunction;
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch(message)
{
case WM_CREATE:
return 0;
case WM_CLOSE:
myClosingFunction();
return 0;
case WM_QUERYENDSESSION:
myShutdownFunction();
return 1;
case WM_DESTROY:
myClosingFunction();
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
c#:
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
private delegate void Close_Function();
private static Close_Function myCloseDelegate;
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
private delegate void Shutdown_Function();
private static Shutdown_Function myShutdownDelegate;
static void StartMonotoring()
{
myCloseDelegate = Close;
myShutdownDelegate = Shutdown;
InterceptMessages(myCloseDelegate, myShutdownDelegate);
}
static void Close();
static void Shutdown();
