Axel Stoltenberg wrote:
> I had the same effect under linux - until I included the option
>
> Option "Backingstore" "on"
>
> in /etc/X11/XF86Config.
This is a dangerous thing to rely on. X servers are not required to do
backing store for their windows, even if you ask for it. In fact, in low
memory conditions, they may simply throw away their backing stores, requiring
that the application repaint the window every time.
> I cannot find such a file on my Mac, nor can I find something equivalent.
> I am quite sure that there should be some way to fix this, at least
> a "xdpyinfo" gives me the information that the option "backing-store" is set
> to "no". How can I set it to "yes" ?
The best thing for you to do is have your application respond to Expose
events. They will be generated by the X server whenever it needs a portion of
your window repainted. That's the right thing to do, even on XFree86 on
Linux.
-Sean
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