Originally Posted by bmeson

Hi,

I am new to motif and working on some legacy code like this:

main_loop(Widget w, XtPointer data)
{
foo();

XtAppAddTimeOut(appCtx, TimeOutInterval,(XtTimerCallbackProc) main_loop,
NULL);
}

Questions:
1. Is the XtAppAddTimeOut() call blocking? When waiting for the timeout, is the calling main_loop() blocked?

2. Notice the call back function is also main_loop(), does this mean recursive call for main_loop()? Would this create a long main_loop() call stack and eventually overflow the stack?

Thanks very much

1. No main_loop() will not be blocked.
2. Yes this does mean recursive calling, but there woudn't be any overflows, it's just calling the main_loop() consequently when the time goes out, you'll be able to call main_loop() externally while the timer is waiting.

See you.