Winform 显示Gif图片

最新推荐文章于 2024-06-06 15:43:41 发布

原创最新推荐文章于 2024-06-06 15:43:41 发布 · 4.7k 阅读

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#winform #null #object #image #class #测试

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本文介绍了一个简单的Windows Forms应用程序，用于加载并播放GIF格式的动画文件。通过使用.NET Framework中的ImageAnimator类，实现了动态更新GIF图片帧的功能。

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.Diagnostics; namespace DysncPicTest { public partial class Form1 : Form { private Image m_imgImage = null; private EventHandler m_evthdlAnimator = null; public Form1() { InitializeComponent(); this.SetStyle(ControlStyles.UserPaint, true); this.SetStyle(ControlStyles.DoubleBuffer, true); this.SetStyle(ControlStyles.AllPaintingInWmPaint, true); m_evthdlAnimator = new EventHandler(OnImageAnimate); Debug.Assert(m_evthdlAnimator != null); } protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); if (m_imgImage != null) { UpdateImage(); e.Graphics.DrawImage(m_imgImage, new Rectangle(100, 100, m_imgImage.Width, m_imgImage.Height)); } } protected override void OnLoad(EventArgs e) { base.OnLoad(e); m_imgImage = Image.FromFile("1.gif"); // 加载测试用的Gif图片 BeginAnimate(); } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { if (m_imgImage != null) { StopAnimate(); m_imgImage = null; } } private void BeginAnimate() { if (m_imgImage == null) return; if (ImageAnimator.CanAnimate(m_imgImage)) { ImageAnimator.Animate(m_imgImage,m_evthdlAnimator); } } private void StopAnimate() { if (m_imgImage == null) return; if (ImageAnimator.CanAnimate(m_imgImage)) { ImageAnimator.StopAnimate(m_imgImage,m_evthdlAnimator); } } private void UpdateImage() { if (m_imgImage == null) return; if (ImageAnimator.CanAnimate(m_imgImage)) { ImageAnimator.UpdateFrames(m_imgImage); } } private void OnImageAnimate(Object sender,EventArgs e) { this.Invalidate(); } private void Form1_Load(object sender, EventArgs e) { } } }