[Mono-dev] Transparency from GIF files does not show up in BitmapData

Sebastien Pouliot sebastien.pouliot at gmail.com
Mon Mar 3 16:19:25 EST 2008

On Tue, 2008-02-26 at 15:20 +0000, Christian Stümpel wrote:
> Hi everybody ,
> since I got no reply I post this again. Please help...

Please fill a bug report and attach both your code and your GIF image.

> my program analyzes System.Drawing.Bitmaps. Many pixel formats (all- 
> non indexed, some indexed) work fine, but in BitmapData of Bitmaps  
> from GIF image files which use transparent color I cannot find the  
> transparency information anywhere. From the source code I guessed  
> that the transparent index would get transformed into an ColorPalette  
> entry which has the alpha component set correctly.  But all palette  
> entries  are opaque.
> A problem with the GIF decoder maybe? Any ideas?
> Christian Stuempel
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