.net圆形按钮的实现

一.设计时效果

二.运行时效果

三.简单的实现思路

  因为在最近的项目中要用到类似效果的控件,所以就索性做了一个.原理很简单,实现的代码不超过250行.继承control类,然后在onpaint方法中来绘制按钮效果,指定Region,同时,要在Onmousedown,Onmouseenter,Onmouseup,Onmouseleave,OnResize,OnLostFocus等方法中做一些相应的处理.

四.部分源代码 

 

 protected override void OnLostFocus(EventArgs e)
        {
            base.OnLostFocus(e);
            this._isEnter = false;
            this.Invalidate();
        }
        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);
            this.Capture = true;
            _isEnter = true;
            this._mouseStyle = MouseStyle.MouseDown;
            this.Invalidate();
            if (e.Button == MouseButtons.Left)
            {
                if (this.ButtonClick != null)
                    this.ButtonClick();
            }
        }
        protected override void OnMouseHover(EventArgs e)

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            base.OnMouseHover(e);
            this._mouseStyle = MouseStyle.MouseHover;
            this.Invalidate(); 
        }
        protected override void OnMouseUp(MouseEventArgs e)
        {
            base.OnMouseUp(e);
            this._mouseStyle = MouseStyle.MouseHover;
            this.Invalidate(); 
        }
        protected override void OnMouseEnter(EventArgs e)
        {
            base.OnMouseEnter(e);
            this._mouseStyle = MouseStyle.MouseHover;
            this.Invalidate(); 
        }
        protected override void OnMouseLeave(EventArgs e)
        {
            base.OnMouseLeave(e);
            this._mouseStyle = MouseStyle.None;
            this.Invalidate(); 
        }
        protected override void OnResize(EventArgs e)
        {
            base.OnResize(e);
            this.Height = this.Width;
        }