Icon Strip Transparency?

BlitzMax Forums/BlitzMax GUI Programming/Icon Strip Transparency?

I've been searching the forums, trying to find a way to get images with transparency information loaded as Icon Strips. I found a thread where someone said you had to use 255,0,255 as the background color and it would be masked out, but it's not, I get the magenta background drawn. So is there another way to get some kind of transparency? It only needs to be 1 bit transparency aka masking, that's all I need.

Oh, and I'm talking about Win32 here as it seems that this is not such an issue on OSX and Linux.