c#下重写BUTTON控件

XPButton.cs代码

using System;

using System.Windows;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Windows .Forms ;

namespace XPCtrl

{

/// <summary>

/// XPButton 的摘要说明。

/// </summary>

public class XPButton:System.Windows.Forms.Button

{

private bool mouseover=false;

public XPButton()

{

//

// TODO: 在此处添加构造函数逻辑

//

this.Cursor = System.Windows.Forms.Cursors.Hand;

}

protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)

{

// base.OnPaint (e);

// System.Drawing.Graphics pp=this.CreateGraphics();

// e.Graphics.Clear(Color.Transparent);

// e.Graphics.DrawEllipse(new System.Drawing.Pen(System.Drawing.Color.WhiteSmoke,5),0,0,this.Width,this.Height);

// System.Drawing.SolidBrush dd=new SolidBrush(System.Drawing.Color.WhiteSmoke);

// e.Graphics.FillEllipse(dd,0,0,this.Width,this.Height);

// (this.BackColor.ToString ())

Color c5 = Color.FromArgb

(255,255,255);

Color c2 = Color.FromArgb

(192,192,192);

if(mouseover)

{

c5=Color.FromArgb(245,245,245);

//c2=Color.FromArgb(192,192,192);

c2=Color.FromArgb(180,175,190);

}

Brush b = new System.Drawing.Drawing2D.LinearGradientBrush

(ClientRectangle, c5, c2, LinearGradientMode.Vertical);

//System.Drawing.Region=new Region(

int offsetwidth=this.Width/50;

Point[] points=new Point[8];

points[0].X=offsetwidth;

points[0].Y=0;

points[1].X=this.Width-offsetwidth;

points[1].Y=0;

points[2].X=this.Width;

points[2].Y=offsetwidth;

points[3].X=this.Width;

points[3].Y=this.Height-offsetwidth;

points[4].X=this.Width-offsetwidth;

points[4].Y=this.Height;

points[5].X=offsetwidth;

points[5].Y=this.Height;

points[6].X=0;

points[6].Y=this.Height-offsetwidth;

points[7].X=0;

points[7].Y=offsetwidth;

// e.Graphics.FillRectangle (b, ClientRectangle);

e.Graphics.FillPolygon(b,points,FillMode.Winding);

if(this.Focused)

{

int offsetwidth1=(this.Width-5)/50+2;

Point[] points1=new Point[8];

points1[0].X=offsetwidth1;

points1[0].Y=2;

points1[1].X=this.Width-offsetwidth1;

points1[1].Y=2;

points1[2].X=this.Width-1;

points1[2].Y=offsetwidth1;

points1[3].X=this.Width-1;

points1[3].Y=this.Height-offsetwidth1;

points1[4].X=this.Width-offsetwidth1;

points1[4].Y=this.Height-1;

points1[5].X=1;

points1[5].Y=this.Height-1;

points1[6].X=2;

points1[6].Y=this.Height-offsetwidth1;

points1[7].X=2;

points1[7].Y=offsetwidth1;

// e.Graphics.DrawPolygon(new Pen(Color.Yellow,2),points1);

Pen p=new Pen(Color.Orange,2);

Pen p1=new Pen(Color.Wheat,2);

//p.DashStyle=DashStyle.DashDot;

e.Graphics.DrawLine(p1,points1[0],points1[1]);

e.Graphics.DrawLine(p,points1[1],points1[2]);

e.Graphics.DrawLine(p,points1[2],points1[3]);

e.Graphics.DrawLine(p,points1[3],points1[4]);

e.Graphics.DrawLine(p,points1[4],points1[5]);

e.Graphics.DrawLine(p,points1[5],points1[6]);

e.Graphics.DrawLine(p1,points1[6],points1[7]);

e.Graphics.DrawLine(p1,points1[7],points1[0]);

}

e.Graphics.DrawPolygon(new Pen(Color.DarkBlue,2),points);

// e.Graphics.DrawLine(new Pen(Color.DarkBlue,2),new Point(0,0),new Point(this.Width,0));

// e.Graphics.DrawLine(new Pen(Color.DarkBlue,2),new Point(0,0),new Point(0,this.Height));

// e.Graphics.DrawLine(new Pen(Color.DarkBlue,2),new Point(this.Width,this.Height),new Point(this.Width,0));

// e.Graphics.DrawLine(new Pen(Color.DarkBlue,2),new Point(this.Width,this.Height),new Point(0,this.Height));

StringFormat drawFormat = new StringFormat();

drawFormat.FormatFlags = StringFormatFlags.DisplayFormatControl;

drawFormat.LineAlignment=StringAlignment.Center;

drawFormat.Alignment=System.Drawing.StringAlignment.Center;

e.Graphics.DrawString(this.Text,this.Font,new LinearGradientBrush(this.ClientRectangle,Color.Black,Color.Black,LinearGradientMode.Vertical),this.ClientRectangle,drawFormat);

b.Dispose();

}

protected override void OnLeave(EventArgs e)

{

base.OnLeave (e);

}

// protected override void OnMouseHover(EventArgs e)

// {

//

// mouseover=true;

// this.Invalidate(false);

// base.OnMouseHover (e);

// }

protected override void OnMouseEnter(EventArgs e)

{

mouseover=true;

this.Invalidate(false);

base.OnMouseEnter (e);

}

protected override void OnNotifyMessage(System.Windows.Forms.Message m)

{

base.OnNotifyMessage (m);

}

protected override void OnMouseLeave(EventArgs e)

{

mouseover=false;

this.Invalidate(false);

base.OnMouseLeave (e);

}

private void DrawButton( System.Drawing.Graphics g)

{

}

protected override void OnPaintBackground(System.Windows.Forms.PaintEventArgs pevent)

{

// Color c5 = Color.FromArgb

// (255,255,255);

// Color c2 = Color.FromArgb

// (192,192,192);

// if(mouseover)

// {

// c5=Color.FromArgb(245,245,245);

// //c2=Color.FromArgb(192,192,192);

// c2=Color.FromArgb(180,175,190);

// }

//

Brush b = new System.Drawing.Drawing2D.LinearGradientBrush

// (ClientRectangle, c5, c2, LinearGradientMode.Vertical);

//pevent.Graphics .DrawRectangle(new Pen(Color.Transparent,2),this.ClientRectangle);

pevent.Graphics .Clear(Color.Wheat );

//base.OnPaintBackground (pevent);

}

}

}

在Form1.cs中调用

我的方法是先拖一个windows的Button过来，再改两个地方

一个是变量定义：

private XPCtrl.XPButton button1;

另一个是Windows 窗体设计器生成的代码中：

this.button1 = new XPCtrl.XPButton();

效果：

这个我用的颜色是灰的，如果换成彩色就可以很漂亮了

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