OnMouseWheel EventHandler

Window now supports the mouse wheel event

Author: shivanmodha

src/studios/vanish/engine/Window.java

@@ -41,6 +41,7 @@ public void paintComponent(Graphics g)
 	public EventHandler OnMouseLeave = new EventHandler();
 	public EventHandler OnMouseClick = new EventHandler();
 	public EventHandler OnMouseDrag = new EventHandler();
+	public EventHandler OnMouseWheel = new EventHandler();
 	public EventHandler OnShow = new EventHandler();
 	public EventHandler OnClose = new EventHandler();
 	public EventHandler OnFocus = new EventHandler();
@@ -209,6 +210,13 @@ public void mouseReleased(MouseEvent e)
 				OnMouseUp.InvokeAll(new Point(e.getX(), e.getY()), e.getButton());				
 			}			
 		});
+		container.addMouseWheelListener(new MouseWheelListener()
+		{
+			public void mouseWheelMoved(MouseWheelEvent e)
+			{
+				OnMouseWheel.InvokeAll(e.getScrollAmount() * e.getWheelRotation());
+			}
+		});
 		container.addMouseMotionListener(new MouseMotionListener()
 		{
 			public void mouseDragged(MouseEvent e)