WPF很强大，但是当WPF的image控件遇到gif时就只读了图片的第一帧，很好很强大！
WPF不屑于gif的简单动画！
幸好WPF里有MediaElement这个东西，它是对MediaPlyer的一个封装，果然很强大啊。不过另我不爽的是我这里有N个gif图片就要有N个MediaElement，要了亲命了。
还是不好，如果你能想到用WebBrowseControl来实现，或者用Frame来实现，恭喜你，你太有才了！
重写一下WPF的image，good idea！
public class GIFImageControl : System.Windows.Controls.Image
{
delegate void OnFrameChangedDelegate();
private Bitmap m_Bitmap;
public string Path { get; set; }
BitmapSource bitmapSource;
public void AnimatedImageControl(string path)
{
Path = path;
m_Bitmap = (Bitmap)Image.FromFile(path);
Width = m_Bitmap.Width;
Height = m_Bitmap.Height;
ImageAnimator.Animate(m_Bitmap, OnFrameChanged);
bitmapSource = GetBitmapSource();
Source = bitmapSource;
}
private void OnFrameChanged(object sender, EventArgs e)
{
Dispatcher.BeginInvoke(DispatcherPriority.Normal,
new OnFrameChangedDelegate(OnFrameChangedInMainThread));
}
private void OnFrameChangedInMainThread()
{
ImageAnimator.UpdateFrames();
if (bitmapSource != null)
bitmapSource.Freeze();
bitmapSource = GetBitmapSource();
Source = bitmapSource;
InvalidateVisual();
}
//private static bool loaded;
private BitmapSource GetBitmapSource()
{
IntPtr inptr = m_Bitmap.GetHbitmap();
bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(
inptr, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
DeleteObject(inptr);
return bitmapSource;
}
[DllImport("gdi32")]
static extern int DeleteObject(IntPtr o);
}
转自：http://www.iteye.com/topic/1115983