WinForm绘制圆角的方法

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：

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();
  }
 }
}

希望本文所述对大家的c#程序设计有所帮助。