private void cmdSetParBkg_Click(object sender, RoutedEventArgs e)
{
//MainGFX.Height = 50;
//GameWrapper.Width = 50;
MainGFX.RemoveObject(ThisLevel.Background);
ThisLevel.Background = new SpriteObject();
ThisLevel.Background.Name = "Background";
ThisLevel.Background.CenterOfMass = new Vector(0, 0);
ThisLevel.Background.IsMovable = false;
ThisLevel.Background.IsObstacle = false;
ThisLevel.selectImage(ThisLevel.Background);
(ThisLevel.Background as SpriteObject).ZoomPreserveAspectRatio(height: GameWrapper.Height);
MainGFX.AddObject(ThisLevel.Background);
MainGFX.Width = ThisLevel.Background.SizeV.X;
// todo: eigentlich in setlvlbackg
//MainGFX.Width = thisLevel.Background.SizeV.X;
// MainGFX.Height = 500;
}