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：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

    public partial class mytoolstrip : toolstrip
    {
        public mytoolstrip()
        {
            initializecomponent();
            this.enddrag += new eventhandler(mytoolstrip_enddrag);
            this.sizechanged += new eventhandler(mytoolstrip_sizechanged);
        }

        #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);
                    this.righttoolstrippanel.resumelayout();
                    this.floatwindow.dispose();
                    this.floatwindow = null;
                    return;
                }
                if (toolbarloc.y + floatwindow.height >= this.toptoolstrippanel.parent.height) //置于底部strippanel
                {
                    this.floatwindow.controls.remove(this);
                    this.bottomtoolstrippanel.suspendlayout();
                    this.bottomtoolstrippanel.controls.add(this);
                    this.location = this.bottomtoolstrippanel.pointtoclient(toolbarloc);
                    this.bottomtoolstrippanel.resumelayout();
                    this.floatwindow.dispose();
                    this.floatwindow = null;
                    return;
                }
            }
        }

        private void mytoolstrip_enddrag(object sender, eventargs e)
        {
            point screenpt = cursor.position;
            point clientpt = this.toptoolstrippanel.parent.pointtoclient(screenpt);

            //浮动区域
            rectangle floatarea = new rectangle(32, 32,    //我这里图标大小调整为32*32
                this.toptoolstrippanel.parent.width - 2 * 32,
                this.toptoolstrippanel.parent.height - 2 * 32);

            if (floatarea.contains(clientpt)) //判断移出时
            {
                toolstripfloatwindow fw = new toolstripfloatwindow();
                fw.controls.add(this);
                this.left = 0;
                this.top = 0;
                this.floatwindow = fw;
                floatwindow.locationchanged += new eventhandler(floatwindow_locationchanged);
                fw.setbounds(screenpt.x, screenpt.y, this.clientsize.width, this.clientsize.height + 22); //22为窗体标题栏高度
                  fw.show();
             }
        }

        private void mytoolstrip_sizechanged(object sender, eventargs e)
        {
            if (this.isfloating)
            {
                this.floatwindow.width = this.clientsize.width;
            }
        }

        #endregion

    }