public TileGridViewer()
: base()
{
this.MotionNotifyEvent += new MotionNotifyEventHandler(OnMoveMouse);
this.LeaveNotifyEvent += new LeaveNotifyEventHandler(OnMouseLeave);
this.Events = Gdk.EventMask.PointerMotionMask | Gdk.EventMask.LeaveNotifyMask |
Gdk.EventMask.ButtonPressMask | Gdk.EventMask.ButtonReleaseMask;
Scale = 1;
}