bool MouseIsOnTheHDG(MouseEventArgs Mouse, GMapMarker Marker) { GMapTargetandLabel MyMarker = (GMapTargetandLabel)Marker; Rectangle MyRectangle = new Rectangle(MyMarker.GetHDGStartPoint().X, MyMarker.GetHDGStartPoint().Y, 20, 15); return MyRectangle.Contains(new Point(Mouse.X, Mouse.Y)); }