[wxPython-users] LCD vs CRT Monitors Issues (!)

[Christopher Barker]

Nitro wrote:

> I guess what's happening is that the anti-aliased text is blended with 
> your mask colour,

I agree -- anti-aliasing and masks don't work out so well.

> Now I am not sure if wx can do all this kind of alpha handling.

It can -- you need to create a transparent bitmap, then draw to it with 
GraphicsContext (I think -- maybe you an still draw with a DC). I don't' 
think there is a direct way to create an alpha bitmap, but there were 
some recent posts here about how to do it.

 From Robin:

"""
It creates a new bitmap with all pixels set to black and with a fully 
transparent alpha:

     bytes = array.array('B', [0] * width*height*4)
     bmp = wx.BitmapFromBufferRGBA(width, height, bytes)

Then any drawing you do on it with a wx.GCDC or a wx.GraphicsContext 
will be working on a fully transparent background, and will reset the 
alpha as as specified in the pen or brush objects when drawing other 
things on top of it.
"""

There you go!

-CHB



  I guess
> especially the "draw font into bitmap preserving alpha information" part 
> might be impossible. Then you could probably just fill the bitmap with 
> the background colour initially instead.
> 
> -Matthias
> 
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