[wxruby-users] Black background using paint_buffered

[Alex Fenton]

Andreas Warberg wrote:
> To avoid flickering during screen updates in a Frame on Windows I
> recently switched from
>
> paint do | dc |
>    #...
> end
>
> to
>
> paint_buffered do | dc |
>    #...
> end
>
> The background colour of the Frame is set to WHITE, which is respected
> under paint, but is replaced by BLACK under paint_buffered.
>
> The painting jobs seems fine, though all my black lines become invisible
> :P
>
> Is there something I can do to sort this out? Perhaps supply my own
> buffer...
>   
Yes, you can pass your own buffer as an optional argument to 
paint_buffered. It should be a Wx::Bitmap of the appropriate height and 
width.

I will see if the ruby code that does paint_buffered could make the 
bitmap background match the window's.

a