WinForm绘制圆角的方法

这篇文章主要介绍了WinForm绘制圆角的方法,涉及C#中GraphicsPath模块的使用技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了WinForm绘制圆角的方法。分享给大家供大家参考。具体实现方法如下：

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									using System;

									using System.Collections.Generic;

									using System.ComponentModel;

									using System.Data;

									using System.Drawing;

									using System.Linq;

									using System.Text;

									using System.Windows.Forms;

									using System.Runtime.InteropServices;

									using System.Drawing.Drawing2D;

									namespace AppStartSample

									{

									 public partial class Form3 : Form

									 {

									  public Form3()

									  {

									   InitializeComponent();

									  }

									  private void button1_Click(object sender, EventArgs e)

									  {

									  }

									  private void button2_Click(object sender, EventArgs e)

									  {

									  }

									  public void SetWindowRegion()

									  {

									   System.Drawing.Drawing2D.GraphicsPath FormPath;

									   FormPath = new System.Drawing.Drawing2D.GraphicsPath();

									   Rectangle rect = new Rectangle(0, 22, this.Width, this.Height - 22);//

									   FormPath = GetRoundedRectPath(rect, 30);

									   this.Region = new Region(FormPath);

									  }

									  private GraphicsPath GetRoundedRectPath(Rectangle rect, int radius)

									  {

									   int diameter = radius;

									   Rectangle arcRect = new Rectangle(rect.Location, new Size(diameter, diameter));

									   GraphicsPath path = new GraphicsPath();

									   // 左上角  

									   path.AddArc(arcRect, 180, 90);

									   // 右上角  

									   arcRect.X = rect.Right - diameter;

									   path.AddArc(arcRect, 270, 90);

									   // 右下角  

									   arcRect.Y = rect.Bottom - 0;

									   path.AddArc(arcRect, 0, 90);

									   // 左下角  

									   arcRect.X = rect.Left;

									   path.AddArc(arcRect, 90, 90);

									   path.CloseFigure();

									   return path;

									  }

									  protected override void OnResize(System.EventArgs e)

									  {

									   this.Region = null;

									   SetWindowRegion();

									  }

									 }

									}