Robert Trawinski wrote:
>
> Hi all,
>
> I need some introduction to writing multithreaded applications with
> Xt/Motif interface.
> Is any introduction available on-line? How and when to use functions
> like XtAppLock,
> XtProcessLock, XtProcessUnlock, XtAppUnlock and others thread-related?
>
> Thanks in advance
>
> Robert

Best advise is that ALL calls to X, Xt, or Xm functions be made from a
single thread. If multiple threads are allowed to process events, the
GUI can easily get corrupted. For example, if one thread handles a
button press event that causes a grab (for instance, in a menu item),
and another handles the associated button release, then the grab will
never be relinquished.
--
Fred L. Kleinschmidt
Boeing Associate Technical Fellow
Technical Architect, Common User Interface Services
M/S 2R-94 (206)544-5225