winform创建不规则窗体的方法

本文实例讲述了winform创建不规则窗体的方法。分享给大家供大家参考。具体如下：

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.text;
using system.windows.forms;
using microsoft.win32;
using system.drawing.drawing2d;
using system.io;
namespace windowsapplication2
{
 public partial class form3 : form
 {
  public form3()
  {
   initializecomponent();
   this.formborderstyle = formborderstyle.none;
   colorconverter colorconvert = new colorconverter();
   this.backcolor = (color)colorconvert.convertfromstring("window");
   this.transparencykey = (color)colorconvert.convertfromstring("window");
  }
  private void button1_click(object sender, eventargs e)
  {
   this.close();
  }
  protected override void onpaint(painteventargs e)
  {
   graphics g = e.graphics;
   rectangle mainrect = new rectangle(0, 0, 695, 278);
   region mainregion = new region(mainrect);
   e.graphics.setclip(mainregion, combinemode.replace);
   //设置窗体的外观形式
   point point1 = new point(0, 32);
   point point2 = new point(9, 20);
   point point3 = new point(21, 13);
   point point4 = new point(34, 9);
   // 创建一个以点为元素的数组
   point[] curvepoints = { point1, point2, point3, point4 };
   // 创建一个graphicspath 对象并添加一条曲线
   graphicspath gpath = new graphicspath();
   gpath.addcurve(curvepoints, 0, 3, 0.8f);
   gpath.addline(36, 9, 378, 9);
   point1.x = 378; point1.y = 9;
   point2.x = 387; point2.y = 5;
   point3.x = 394; point3.y = 0;
   point[] curvepoints2 = { point1, point2, point3 };
   gpath.addcurve(curvepoints2, 0, 2, 0.8f);
   gpath.addline(394, 0, 0, 0);
   region rg = new region(gpath);
   e.graphics.excludeclip(rg);
  //可以为任意图片
   string str = directory.getcurrentdirectory() + "\\2.png";
   image img = image.fromfile(str);
   e.graphics.drawimage(img, 0, 0, 695, 278);
   // 重设剪切好的区域
   e.graphics.resetclip();
  }
 }
}

希望本文所述对大家的c#程序设计有所帮助。