Menus with API

[Technocrat]

Just change the case to your wID #ers:

case WM_COMMAND:
        {
            switch(wparam)
            {
            case ID_QUIT:
                {
                    MessageBox(NULL, "The application is now quiting!", 
                               "Quiting application", MB_OK | MB_ICONINFORMATION);
                    PostQuitMessage(0);
                    return 0;
                } break;
            }
        } break;