private void FormScreenShutcut_MouseUp(object sender, MouseEventArgs e)
 {
     if (e.Button == MouseButtons.Left)
     {
         pointEnd          = MousePosition;
         pointStartRefRect = Point.Empty;
         mouseDowned       = false;
         //选择框
         if (!rectChoosed)
         {
             //普通选择
             if (pointStart.X != pointEnd.X || pointStart.Y != pointEnd.Y)
             {
                 rectChoosed = true;
                 Invalidate();
             }
             else if (lastFindedWnd != IntPtr.Zero)
             {
                 if (lastFindedWndRect.Left == 0 && lastFindedWndRect.Top == 0 &&
                     lastFindedWndRect.Left == lastFindedWndRect.Right && lastFindedWndRect.Top == lastFindedWndRect.Bottom)
                 {
                     return;
                 }
                 rectChoosed = true;
                 Invalidate();
             }
         }
         else
         {
             if (formColorPick.Visible)
             {
                 WindowUtils.Hide(formColorPick.Handle);
             }
             WindowUtils.Top(formEditScreenShutTools.Handle);
             if (currentSizeType == SizeType.Move && formEditScreenShutTools.CurrentTools != PaintTools.None)
             {
                 //工具结束
                 paintBox.OnMouseUp(e);
             }
         }
     }
 }