PNG transparency not working on all OS...

[Kukulkan]

Hi,

I compiled an application (32bit) that uses the ListIconGadget. I add images to the first column using AddGadgetItem() with ImageID. The image is a png file with alpha channel. It is some kind of a ball icon.

On one Windows 7 (32) it looks fine and on another Windows 7 (32), there are black boxes around the ball (no transparency). The rest of the Windows systems looking fine on both computers (both running in 32 bit depth).

Has anyone an idea about the reason of this missing transparency? Can there be some missing system libraries?

Kukulkan

[jesperbrannmark]

I have also seen this while running on my server (so no, or rather minimal gfx-card). I guess this is because transperancy might be handled by hardware acceleration.