[PD] Do I need 2 Gem/PD instances for this application

[Jim Ruxton]

Thanks using makefilename along with a save message to pix_buffer in 
conjunction with pix_buffer_write and pix_buffer_read is working very well.

>Just curious. Why is it a design failure, 

> it combines three unrelated things:
> - taking snapshots from the current framebuffer
> - generating filenames
> - saving pixes to disk
>
>
>> which alternatives should be
>> used?
> [pix_snap] +  [pix_buffer] + [makefilename]
>
>
>
jim