AForge.Controls.ManipulatorControl.ManipulatorControl_MouseUp C# (CSharp) Метод

        private void ManipulatorControl_MouseUp( object sender, MouseEventArgs e )
        {
            if ( ( e.Button == MouseButtons.Left ) && ( tracking ) )
            {
                tracking = false;
                this.Capture = false;
                this.Cursor = Cursors.Arrow;

                timer.Stop( );

                if ( resetPositionOnMouseRelease )
                {
                    manipulatatorX = 0;
                    manipulatatorY = 0;
                }

                NotifyClients( );

                Invalidate( );
            }
        }