public void OnMouseDownAtSaveBlackoutBorder(object obj, RoutedEventArgs arg)
{
SaveAndQuitEventArgs quitArg = new SaveAndQuitEventArgs();
quitArg.canClose = true;
if (OnSaveAndQuit != null)
{
OnSaveAndQuit(this, quitArg);
}
if (quitArg.canClose)
{
DialogResult = true;
}
}