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#1 Posted : Monday, August 8, 2005 1:44:03 AM(UTC)

Groups: Registered
Posts: 3

Hello everybody (and LEAD Tools Support)

I am evaluating thi sproduct for a possible purchase by my company, we are looking for Animated GIF support.
Does anybody know if it is possible to resize animated GIFs using the .NET lib?

I get the exception...

" Invalid parameter passed" when trying to resize.
but a single image GIF resizes no problem? eh!

I create the Raster Image from an existing .net Image object, is this why it doesnt work, because .NET does not support animated GIFs?

How do i resize an animated GIF using .NET then, i was doing this, any ideas

                ResizeCommand resizeCommand = new ResizeCommand();

    RasterImage image = new RasterImage(Image.FromFile(@"c:\test2.gif"));
                resizeCommand.Flags = RasterSizeFlags.Normal;

    resizeCommand.DestinationImage = new RasterImage(    RasterMemoryFlags.Managed,




                    RasterByteOrder.Rgb ,




                Debug.WriteLine("Saving now");

    Image resizedImage = resizeCommand.DestinationImage.ConvertToGdiPlusImage();

Cheers alan.


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#2 Posted : Tuesday, August 9, 2005 2:26:42 AM(UTC)
Maen Hasan

Groups: Registered, Tech Support
Posts: 1,326

Was thanked: 1 time(s) in 1 post(s)


The following code shows how to load an animated GIF file, resize it, and then save the result as animated gif file:
using Leadtools.ImageProcessing;
using Leadtools;
using Leadtools.Codecs;
private void button5_Click(object sender, System.EventArgs e)
int i =0;
IRasterImage image;           
RasterCodecs codecs = new RasterCodecs ();
ResizeCommand resizeCommand = new ResizeCommand();
image = codecs.Load(@"c:\qtrres.gif",0,CodecsLoadByteOrder.BgrOrGray,1,-1);
resizeCommand.Flags = RasterSizeFlags.Normal;
resizeCommand.DestinationImage = new RasterImage (RasterMemoryFlags.Managed , image.Width / 2, image.Height / 2, image.BitsPerPixel, image.Order , image.ViewPerspective, image.Palette , null );

for( i=1;i<image.PageCount;i++)
image.Page = i;
codecs.Save(resizeCommand.DestinationImage,@"C:\out1.gif",RasterImageFormat.Gif,8,1,1,1,CodecsSavePageMode.Append  );
MessageBox.Show("Image Saved...");


Maen Badwan
LEADTOOLS Technical Support

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