Bitmap.Rotate Problem - DOTNET

Well, if the SDF uses "new Bitmap (filename)", then that call doesn't 'free
the file'. Yes, this is a pretty big bug IMHO, so hopefully someone from
Microsoft will see this and fix their code.

BTW: I haven't look at this piece of the SDK code, but why not download it,
modify it, and change (assuming they use "new Bitmap (filename)"):

new Bitmap (filename)

to...

using (FileStream fs = new FileStream (filename))
{
bmp = new Bitmap (fs);
}

That'll work.

Hilton



<info@pixafe.com> wrote in message
news:1170964185.793965.312120@s48g2000cws.googlegroups.com...
> Hi,
> when i use the attached method to rotate a bitmap and save it back to
> disk i always get an IO.Exception because the given file is in use by
> another process. I think the Bitmap.Rotate Method in SDF fails to free
> the file. Or is my code wrong?
> Thank you for any hints,
> Alex
>
>
> public static void RotateImage( string pathImage, float Angle )
> {
> IImage image;
> m_ImageFactory.CreateImageFromFile(pathImage, out image);
>
> ImageInfo ii;
> image.GetImageInfo(out ii);
>
> IBitmapImage bitmapImage;
> m_ImageFactory.CreateBitmapFromImage(image,
> (uint)ii.Width,
> (uint)ii.Height,
> ii.PixelFormat,
> InterpolationHint.InterpolationHintDefault,
> out bitmapImage );
>
> Bitmap b = ImageUtils.IBitmapImageToBitmap(bitmapImage);
> Bitmap b2 = ImageUtils.Rotate(b, Angle);
>
> b2.Save( pathImage, System.Drawing.Imaging.ImageFormat.Bmp);
> }
>
>
> --
> www.pixafe.com
>

I just looked at our code, and CreateImageFromFile is a direct passthrough
to COM, so we're not leaving the file open.


--
Chris Tacke - Embedded MVP
OpenNETCF Consulting
Managed Code in the Embedded World
www.opennetcf.com
--


<info@pixafe.com> wrote in message
news:1170964185.793965.312120@s48g2000cws.googlegroups.com...
> Hi,
> when i use the attached method to rotate a bitmap and save it back to
> disk i always get an IO.Exception because the given file is in use by
> another process. I think the Bitmap.Rotate Method in SDF fails to free
> the file. Or is my code wrong?
> Thank you for any hints,
> Alex
>
>
> public static void RotateImage( string pathImage, float Angle )
> {
> IImage image;
> m_ImageFactory.CreateImageFromFile(pathImage, out image);
>
> ImageInfo ii;
> image.GetImageInfo(out ii);
>
> IBitmapImage bitmapImage;
> m_ImageFactory.CreateBitmapFromImage(image,
> (uint)ii.Width,
> (uint)ii.Height,
> ii.PixelFormat,
> InterpolationHint.InterpolationHintDefault,
> out bitmapImage );
>
> Bitmap b = ImageUtils.IBitmapImageToBitmap(bitmapImage);
> Bitmap b2 = ImageUtils.Rotate(b, Angle);
>
> b2.Save( pathImage, System.Drawing.Imaging.ImageFormat.Bmp);
> }
>
>
> --
> www.pixafe.com
>