VitNX_ToolWindow.OnMouseDown Method

protected override void OnMouseDown(MouseEventArgs e)
 {
     base.OnMouseDown(e);
     if (_closeButtonRect.Contains(e.Location))
     {
         _closeButtonPressed = true;
         _closeButtonHot = true;
         Invalidate();
         return;
     }
     if (_headerRect.Contains(e.Location))
     {
         _shouldDrag = true;
         return;
     }
 }