Offscreen Screencapture? <-- issues that affect image rendering

[Chipp Walters]

True, but these properties are certainly within the control of the 
developer, no?

IOW, the procedure can still be used in standalones, unless a 
standalone's stack cantmodify is set tot true.

best,

Chipp

Wouter wrote:
> This will still crash in certain cases.
> Because  a stack with its cantmodify set to true and which buffered  
> state is not true, cannot be forced to update its screenbuffer.
> The effectiveness of a screen buffer update can be seen in the  
> difference between the pixmapID of a stack  and the windowID of a  
> stack. If those numbers are the same the stack is NOT buffered and  the 
> handler will crash gloriously.