private void WindowTitleThumbMoveOnDragDelta(object sender, DragDeltaEventArgs dragDeltaEventArgs)
{
var window = this.ParentWindow;
//if (window != null && this.Position != Position.Bottom && (this.Position == Position.Top || (this.dragStartedMousePos.GetValueOrDefault().Y <= window.TitlebarHeight && window.TitlebarHeight > 0)))
//if (window != null && this.Position != Position.Bottom && this.dragStartedMousePos.GetValueOrDefault().Y <= window.TitlebarHeight && window.TitlebarHeight > 0)
if (window != null && this.Position != Position.Bottom)
{
MetroWindow.DoWindowTitleThumbMoveOnDragDelta(sender as IMetroThumb, window, dragDeltaEventArgs);
}
}