void WheelMouseListener_Loaded(object sender, RoutedEventArgs e)
 {
     Utilities.WheelMouseListener wml = new Utilities.WheelMouseListener();
     wml.MouseWheelScroll += new WheelMouseHandler(wml_MouseWheelScroll);
 }
 void WheelMouseListener_Loaded(object sender, RoutedEventArgs e)
 {
     Utilities.WheelMouseListener wml = new Utilities.WheelMouseListener();
     wml.MouseWheelScroll += new WheelMouseHandler(wml_MouseWheelScroll);
 }