Hi, if i have a .png file with alpha (alpha trensparency, or what it is called).

I know how to load PNG files in glpng, but how to is set so that the picture get transparent on those parts who should be transparent ?

http://www.panelmonkey.org/sprite.php?id=790&theme=3
like on that picture, the background is set to "transparent", how can i set so those parts get transparent in glpng ?

//ty in advance