Hello,

>  [...] 
>  Now, as for alpha blending support in wx, I have not seen it; but the 
>  support *is* in PIL.  My first guess at the process would be to capture 
>  the draw event, copy the existing bitmap into a PIL canvas, do the 
>  blending in PIL, copy the PIL data into an image and then a bitmap, then 
>  blit the resultant bitmap on in the appropriate place.  Sounds painful!  
>  But it wouldn't be as bad if you could do all of the drawing in PIL though.
>  
>  
>  So, in conclusion, I don't think there's a way to do it in wx, but there 
>  is a path in PIL, albeit a long one.
>  
>  Good luck!
>  -Shane

Thanks for the explaination. I was looking exactly for this kind of
answer. As you may have guessed, I'm not very experienced with image
manipulations, so my terminology (and understanding of what was going on)
was quite unprecise... but you definitely pointed me into the right
direction, thanks!

Alberto

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