private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
_ondrag = true;
base.OnMouseLeftButtonDown(e);
this.DragMove();
Rectangle r = WindowTools.GetWindowRect("DcP10");
_posX = (Left - r.Left) / (r.Width / _scale);
_posY = (Top - r.Top) / (r.Height / _scale);
_ondrag = false;
}
