C# ToolStrip制作四边停靠浮动工具栏

关于浮动工具条的制作，阿捷写了一篇很不错的文章，见：http://www.weikejianghu.com/article/44272.htm
阿捷这个工具条浮动后只能在顶部停靠，基于此，我在这边增加在左/右/底部停靠，停靠条件是浮动窗体紧贴或越过主窗体边缘。

其实阿捷给出的代码已经相当详细了:) 我这里主要给出重写的ToolStrip代码段，增加了三个ToolStripPanel

        #region 漂浮状态

        public ToolStripFloatWindow FloatWindow { get; set; }

        private bool isFloating
        {
            get
            {
                return (FloatWindow != null);
            }
        }

        public ToolStripPanel TopToolStripPanel { get; set; }
        public ToolStripPanel BottomToolStripPanel { get; set; }
        public ToolStripPanel LeftToolStripPanel { get; set; }
        public ToolStripPanel RightToolStripPanel { get; set; }

        #endregion

        #region 漂浮实现

        private void FloatWindow_LocationChanged(object sender, EventArgs e)
        {
            //当floatwindws的位置移动到 toolstrippanel中时，将this放置到 toolstripPanel上
            if (this.FloatWindow == null)
            {
                return;
            }
            if (FloatWindow.HasCreated)
            {
                //主窗体位置
                Point frmLoc = this.TopToolStripPanel.Parent.Location;
                //浮动工具条位置
                Point toolBarLoc = FloatWindow.Location;

                if (toolBarLoc.Y - frmLoc.Y <= 0) //置于顶部StripPanel
                {
                    this.FloatWindow.Controls.Remove(this);
                    this.TopToolStripPanel.SuspendLayout();
                    this.TopToolStripPanel.Controls.Add(this);
                    this.Location = this.TopToolStripPanel.PointToClient(toolBarLoc);
                    this.TopToolStripPanel.ResumeLayout();
                    this.FloatWindow.Dispose();
                    this.FloatWindow = null;
                    return;
                }
                if (toolBarLoc.X - frmLoc.X <= 0) //置于左边StripPanel
                {
                    this.FloatWindow.Controls.Remove(this);
                    this.LeftToolStripPanel.SuspendLayout();
                    this.LeftToolStripPanel.Controls.Add(this);
                    this.Location = this.LeftToolStripPanel.PointToClient(toolBarLoc);
                    this.LeftToolStripPanel.ResumeLayout();
                    this.FloatWindow.Dispose();
                    this.FloatWindow = null;
                    return;
                }
                if (toolBarLoc.X + FloatWindow.Width >= this.TopToolStripPanel.Parent.Width) //置于右边StripPanel
                {
                    this.FloatWindow.Controls.Remove(this);
                    this.RightToolStripPanel.SuspendLayout();
                    this.RightToolStripPanel.Controls.Add(this);
                    this.Location = this.RightToolStripPanel.PointToClient(toolBarLoc);
              &nb