protected static void IssuePluginEvent(SurfaceEvent eventType)
 {
     GL.IssuePluginEvent((int)eventType);
 }
 protected static void IssuePluginEvent(SurfaceEvent eventType)
 {
 }
 protected static void IssuePluginEvent(SurfaceEvent eventType)
 {
     //GL.IssuePluginEvent (IntPtr.Zero, (int) eventType);
     GL.IssuePluginEvent((int)eventType);
 }