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c#创建浮动工具栏功能示例

2019年07月18日  | 移动技术网IT编程  | 我要评论

所谓的浮动工具栏，效果图如下：

也就是说，可以将工具栏拖出其原先的停靠位置，而且可以将拖出来的工具栏再拖放回去。

实现的基本思路如下

1、拖动出来以后，需要创建一个大小合适的窗口，作为工具栏新的停靠容器，这个窗口可以这样设置：

formborderstyle = system.windows.forms.formborderstyle.fixedtoolwindow;

showicon = false;

showintaskbar = false;

topmost = true;

2、浮动工具栏可以扩展自.net framework提供的toolstrip，它被拖动都某个位置，松开鼠标左键时，会触发enddarg事件，在这个事件中，我们将其从原来的停靠容器中移除，同时根据鼠标左键松开时，在鼠标所在位置上创建一个窗口，作为工具栏的新容器。

这个就是基本的思路了，下面是浮动工具栏floattoolstrip 具体的实现代码：

复制代码 代码如下:

代码

code highlighting produced by actipro codehighlighter (freeware)http://www.codehighlighter.com/-->using system;
using system.collections.generic;
using system.componentmodel;
using system.drawing;
using system.data;
using system.text;
using system.windows.forms;

namespace floattoolstripdemo
{
    public partial class floattoolstrip : toolstrip
    {
        private toolstrippanel tspanel;

        public floattoolstrip()
        {
            initializecomponent();
            this.enddrag += new eventhandler(mytoolstrip_enddrag);
            this.sizechanged += new eventhandler(mytoolstrip_sizechanged);
        }

        private toolstripfloatwindow floatform;
        public toolstripfloatwindow floatform
        {
            get { return floatform; }
            set
            {
                floatform = value;
                if (floatform != null)
                {
                    floatform.locationchanged += new eventhandler(floatform_locationchanged);
                    floatform.formclosing += new formclosingeventhandler(floatform_formclosing);
                }
            }
        }

        void floatform_formclosing(object sender, formclosingeventargs e)
        {
            e.cancel = true;
        }

        private void floatform_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.floatform == null)
            {
                return;
            }
            else
            {
                if (floatform.hascreated)
                {
                    point currentpt = new point(floatform.location.x, floatform.location.y);
                    point minpt = this.tspanel.pointtoscreen(tspanel.location);
                    point maxpt;
                    if (this.tspanel.height <= 20)
                    {
                        maxpt = new point(minpt.x + this.tspanel.width, minpt.y + 20);

                    }
                    else
                    {
                        maxpt = new point(minpt.x + this.tspanel.width, minpt.y + this.tspanel.height);
                    }

                    if ((currentpt.x > minpt.x) && (currentpt.x < maxpt.x) && (currentpt.y > minpt.y - 25) && (currentpt.y < maxpt.y - 25))
                    {
                        this.floatform.controls.remove(this);
                        this.tspanel.suspendlayout();
                        this.tspanel.controls.add(this);
                        this.location = this.tspanel.pointtoclient(currentpt);
                        this.tspanel.resumelayout();
                        this.floatform.dispose();
                        this.floatform = null;
                    }
                }
            }
        }

        public bool isfloating
        {
            get
            {
                return (floatform != null);
            }
        }

        public toolstrippanel toolstrippanel
        {
            get
            {
                return this.tspanel;
            }
            set
            {
                this.tspanel = value;
            }
        }

        private void mytoolstrip_enddrag(object sender, eventargs e)
        {
            //判断移除时
            if (this.tspanel == null)
            {
                messagebox.show("请先设置toolstrippanel属性");
                return;
            }
            point dockpoint = cursor.position;
            int openx, openy;
            openx = dockpoint.x;
            openy = dockpoint.y;

            point clientpt = this.tspanel.parent.pointtoclient(dockpoint);
            if (clientpt.y > tspanel.height)
            {
                toolstripfloatwindow tsfw = new toolstripfloatwindow();
                this.tspanel.controls.remove(this);
                tsfw.controls.add(this);
                this.left = 0;
                this.top = 0;
                this.floatform = tsfw;
                point newloc = new point(openx, openy);
                tsfw.show();
                tsfw.location = newloc;
                tsfw.setbounds(newloc.x, newloc.y, this.clientsize.width, this.clientsize.height+25);
            }
        }

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

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