ImageAnimator.Animate(Image, EventHandler) Yöntem

Tanım

Ad Alanı:

System.Drawing

Bütünleştirilmiş Kod:

System.Drawing.Common.dll

Paket:

System.Drawing.Common v8.0.0

Kaynak:

ImageAnimator.cs

Çok çerçeveli bir görüntüyü animasyon olarak görüntüler.

public:
 static void Animate(System::Drawing::Image ^ image, EventHandler ^ onFrameChangedHandler);

public static void Animate (System.Drawing.Image image, EventHandler onFrameChangedHandler);

static member Animate : System.Drawing.Image * EventHandler -> unit

Public Shared Sub Animate (image As Image, onFrameChangedHandler As EventHandler)

Parametreler

image

Image

Animasyon Image uygulanacak nesne.

onFrameChangedHandler

EventHandler

EventHandler Animasyon çerçevesi değiştiğinde çağrılan yöntemi belirten bir nesne.

Örnekler

Bu Windows Forms uygulaması, ekrana animasyonlu resim çizmeyi gösterir. Görüntü, uygulamayla aynı klasörde bulunan animasyonlu GIF dosyasından SampleAnimation.gif oluşturulur.

#using <System.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;

public ref class AnimateImageForm : public Form 
{

    // Create a Bitmap Object.
private:
    Bitmap^ animatedImage;
private:
    bool currentlyAnimating;

public:
    AnimateImageForm()
    {
        try
        {
            animatedImage = gcnew Bitmap("SampleAnimation.gif");
        }
        catch (ArgumentException^)
        {
            MessageBox::Show("Could not read the image file " +
                "\"SampleAnimation.gif\",\n" +
                "or it is not a valid image file.");
        }
    }

    // This method begins the animation.
public:
    void AnimateImage() 
    {
        // Begin the animation only once.
        // Make sure to animate only if animatedImage was
        // successfully initialised.
        if (!currentlyAnimating && animatedImage != nullptr)
        {
            ImageAnimator::Animate(animatedImage,
                gcnew EventHandler(this, &AnimateImageForm::OnFrameChanged));
            currentlyAnimating = true;
        }
    }

private:
    void OnFrameChanged(Object^ , EventArgs^ ) 
    {
        // Force a call to the Paint event handler.
        this->Invalidate();
    }

protected:
    virtual void OnPaint(PaintEventArgs^ e) override
    {
        // Begin the animation.
        AnimateImage();

        // Get the next frame ready for rendering.
        ImageAnimator::UpdateFrames();

        if (animatedImage != nullptr)
        {
            // Draw the next frame in the animation.
            e->Graphics->DrawImage(this->animatedImage,
                Point(0, 0));
        }
    }
};

[STAThread]
int main()
{
    Application::Run(gcnew AnimateImageForm());
}

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());
    }
}

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(ByVal o As Object, ByVal e As EventArgs)

        'Force a call to the Paint event handler.
        Me.Invalidate()
    End Sub

    Protected Overrides Sub OnPaint(ByVal 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

Açıklamalar

Not

.NET 6 ve sonraki sürümlerde, bu türü içeren System.Drawing.Common paketi yalnızca Windows işletim sistemlerinde desteklenir. Platformlar arası uygulamalarda bu türün kullanılması derleme zamanı uyarılarına ve çalışma zamanı özel durumlarına neden olur. Daha fazla bilgi için bkz . System.Drawing.Common yalnızca Windows'ta desteklenir.