C#手工双缓冲技术用法实例分析

本文实例讲述了c#手工双缓冲技术。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;
namespace advanced_drawing
{
  public partial class form19 : form
  {
    bufferedgraphicscontext buffercontext;
    bitmap gif = new bitmap(@"d:/我的文档/桌面/ico/a.gif");
    public form19()
    {
      initializecomponent();
      buffercontext = new bufferedgraphicscontext();
      buffercontext.maximumbuffer = this.clientrectangle.size;
    }
    void gif_framechanged(object sender, eventargs e)
    {
      graphics g = this.creategraphics();
      bufferedgraphics frame = buffercontext.allocate(g, this.clientrectangle);
      imageanimator.updateframes(gif);
      frame.graphics.drawimage(gif, this.clientrectangle);
      frame.render();
    }
    private void form19_formclosing(object sender, formclosingeventargs e)
    {
      buffercontext.dispose();
    }
    private void form19_paint(object sender, painteventargs e)
    {
      if (imageanimator.cananimate(gif))
      {
        imageanimator.animate(gif, gif_framechanged);
      }
    }
  }
}

希望本文所述对大家的c#程序设计有所帮助。