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How to display a GIF animation?

I have tried PictureBox and Panel, but none of them can diaplay the animation. Both of them just displayed the first frame of the animation, why? how to solve it? thanx

4 Replies

Administrator December 20, 2002 12:45 PM UTC

study this: System.Drawing.ImageAnimator this class makes what you want. sorry that i don't have time to make you an example! > I have tried PictureBox and Panel, but none of them can diaplay the animation. > Both of them just displayed the first frame of the animation, why? how to solve it? > thanx >

Administrator December 20, 2002 02:35 PM UTC

Example [Visual Basic, C#] This Windows Forms application demonstrates how to draw an animated image to the screen. The image is created from the animated GIF file SampleAnimation.gif located in the same folder as the application. [Visual Basic] Imports System Imports System.Drawing Imports System.Windows.Forms Public Class animateImage Inherits Form 'Create a Bitmpap Object. Private animatedImage As New Bitmap("SampleAnimation.gif") Private currentlyAnimating As Boolean = False 'This method begins the animation. Public Sub AnimateImage() If Not currentlyAnimating Then 'Begin the animation only once. ImageAnimator.Animate(animatedImage, _ New EventHandler(AddressOf Me.OnFrameChanged)) currentlyAnimating = True End If End Sub Private Sub OnFrameChanged(o As Object, e As EventArgs) 'Force a call to the Paint event handler. Me.Invalidate() End Sub Protected Overrides Sub OnPaint(e As PaintEventArgs) 'Begin the animation. AnimateImage() 'Get the next frame ready for rendering. ImageAnimator.UpdateFrames() 'Draw the next frame in the animation. e.Graphics.DrawImage(Me.animatedImage, New Point(0, 0)) End Sub Public Shared Sub Main() Application.Run(New animateImage()) End Sub End Class [C#] using System; using System.Drawing; using System.Windows.Forms; public class animateImage : Form { //Create a Bitmpap Object. Bitmap animatedImage = new Bitmap("SampleAnimation.gif"); bool currentlyAnimating = false; //This method begins the animation. public void AnimateImage() { if (!currentlyAnimating) { //Begin the animation only once. ImageAnimator.Animate(animatedImage, new EventHandler(this.OnFrameChanged)); currentlyAnimating = true; } } private void OnFrameChanged(object o, EventArgs e) { //Force a call to the Paint event handler. this.Invalidate(); } protected override void OnPaint(PaintEventArgs e) { //Begin the animation. AnimateImage(); //Get the next frame ready for rendering. ImageAnimator.UpdateFrames(); //Draw the next frame in the animation. e.Graphics.DrawImage(this.animatedImage, new Point(0, 0)); } public static void Main() { Application.Run(new animateImage()); } } [C++, JScript] No example is available for C++ or JScript. To view a Visual Basic or C# example, click the Language Filter button in the upper-left corner of the page. > > study this: > System.Drawing.ImageAnimator > this class makes what you want. > > sorry that i don't have time to make you an example! > > > > I have tried PictureBox and Panel, but none of them can diaplay the animation. > > Both of them just displayed the first frame of the animation, why? how to solve it? > > thanx > > >

Administrator December 22, 2002 02:01 AM UTC

Thank you

Administrator August 17, 2003 03:47 AM UTC

> Example > [Visual Basic, C#] This Windows Forms application demonstrates how to draw an animated image to the screen. The image is created from the animated GIF file SampleAnimation.gif located in the same folder as the application. > > [Visual Basic] > Imports System > Imports System.Drawing > Imports System.Windows.Forms > Public Class animateImage > Inherits Form > 'Create a Bitmpap Object. > Private animatedImage As New Bitmap("SampleAnimation.gif") > Private currentlyAnimating As Boolean = False > 'This method begins the animation. > Public Sub AnimateImage() > If Not currentlyAnimating Then > 'Begin the animation only once. > ImageAnimator.Animate(animatedImage, _ > New EventHandler(AddressOf Me.OnFrameChanged)) > currentlyAnimating = True > End If > End Sub > Private Sub OnFrameChanged(o As Object, e As EventArgs) > 'Force a call to the Paint event handler. > Me.Invalidate() > End Sub > Protected Overrides Sub OnPaint(e As PaintEventArgs) > 'Begin the animation. > AnimateImage() > 'Get the next frame ready for rendering. > ImageAnimator.UpdateFrames() > 'Draw the next frame in the animation. > e.Graphics.DrawImage(Me.animatedImage, New Point(0, 0)) > End Sub > Public Shared Sub Main() > Application.Run(New animateImage()) > End Sub > End Class > [C#] > using System; > using System.Drawing; > using System.Windows.Forms; > public class animateImage : Form { > //Create a Bitmpap Object. > Bitmap animatedImage = new Bitmap("SampleAnimation.gif"); > bool currentlyAnimating = false; > //This method begins the animation. > public void AnimateImage() { > if (!currentlyAnimating) { > //Begin the animation only once. > ImageAnimator.Animate(animatedImage, new EventHandler(this.OnFrameChanged)); > currentlyAnimating = true; > } > } > private void OnFrameChanged(object o, EventArgs e) { > //Force a call to the Paint event handler. > this.Invalidate(); > } > protected override void OnPaint(PaintEventArgs e) { > //Begin the animation. > AnimateImage(); > //Get the next frame ready for rendering. > ImageAnimator.UpdateFrames(); > //Draw the next frame in the animation. > e.Graphics.DrawImage(this.animatedImage, new Point(0, 0)); > } > public static void Main() { > Application.Run(new animateImage()); > } > } > [C++, JScript] No example is available for C++ or JScript. To view a Visual Basic or C# example, click the Language Filter button in the upper-left corner of the page. > > > > > > study this: > > System.Drawing.ImageAnimator > > this class makes what you want. > > > > sorry that i don't have time to make you an example! > > > > > > > I have tried PictureBox and Panel, but none of them can diaplay the animation. > > > Both of them just displayed the first frame of the animation, why? how to solve it? > > > thanx > > > > > >
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