[wxPython-users] Bug in Bitmap / PNG Transparency?

[Paul McNett]

Marcus wrote:
> When trying to display a PNG via wx.Image and wx.BitmapFromImage, it
> appears as though the alpha channel isn't rendered properly. I have
> attached a sample image and test-case, which is a white-to-transparent
> gradient on top, and a solid white color on the bottom. That image
> /should/ render as solid white when the background is white, however it
> instead renders a greyish-gradient. Is this a bug in wxPython, or
> wxWidgets, or am I doing something wrong?
> 
> Attached are white_gradient.png (the 32-bit gradient/white PNG), test.py
> (an example), and result_output.png (a screenshot of the example as
> taken on WinXP).

It will probably ring like one of those annoyingly-spot-on commercials, 
but your test case renders perfectly on Mac.

-- 
pkm ~ http://paulmcnett.com