void glControl_UnhookEvents()
{
glControl.Paint -= glControl_Paint;
glControl.Resize -= glControl_Resize;
glControl.MouseDown -= glControl_MouseDown;
glControl.MouseUp -= glControl_MouseUp;
glControl.MouseMove -= glControl_MouseMove;
glControl.MouseWheel -= glControl_MouseWheel;
glControl.Load -= new EventHandler(glControl_Load);
glControl.Disposed -= glControl_Disposed;
}