c#教程之C#手工双缓冲技术用法实例分析

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c#教程之C#手工双缓冲技术用法实例分析
2018-02-12 21:20 来源：未知

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：

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								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);

								      }

								    }

								  }

								}