public static MorphicResult <MorphicUnit, Win32ApiError> GenerateApplicationCommandEvent(IntPtr sourceHwnd, IntPtr targetHwnd, AppCommand appCommand)
{
var uDevice = ExtendedPInvoke.FAPPCOMMAND_KEY; // "user pressed a key" (i.e. we are generating an app command as a virtual key press)
ushort dwKeys = 0; // no virtual mouse/modifier/X keys are down
return(AppCommandUtils.GenerateApplicationCommandEvent(sourceHwnd, targetHwnd, dwKeys, uDevice, appCommand));
}
// NOTE: this overload is provided in case the caller doesn't have a window to send the application command from; note that this scenario isn't quite as fail-proof as providing an hwnd (since explorer.exe could be crashed, restarting, etc.)
public static MorphicResult <MorphicUnit, Win32ApiError> GenerateApplicationCommandEvent(AppCommand appCommand)
{
var taskbarHwnd = PInvoke.User32.FindWindow("Shell_TrayWnd", null);
if (taskbarHwnd == IntPtr.Zero)
{
// could not find taskbar window
var win32ErrorCode = PInvoke.Kernel32.GetLastError();
return(MorphicResult.ErrorResult(Win32ApiError.Win32Error((uint)win32ErrorCode)));
}
// NOTE: many implementations of SendMessage(...WM_APPCOMMAND) use a sourceHwnd of IntPtr.Zero; we've chosen to use the taskbar as both source and target hwnd out of an abundance of caution; if this doesn't work well in practice, try following the example of others by setting the sourceHwnd to IntPtr.Zero
return(AppCommandUtils.GenerateApplicationCommandEvent(taskbarHwnd, taskbarHwnd, appCommand));
}