🚀 go-pugleaf

In the X Frequently Asked Questions list, no. 106, some code is given
that allows you to query the user at a given point in  a program and
not proceed past that point until he answers.  To do this it uses a
private event loop:         

         (create modal dialog box)
         while (answer == RET_NONE || XtAppPending(context)) {
                XtAppProcessEvent (context, XtIMAll);
         }
         (answer is a global which is set by the callbacks of the dlg
          box)

I'm wondering why XtAppPending() is in the while condition.  Would
this work just as well?

   while(answer==RET_NONE) {
      XtAppProcessEvent (context, XtIMAll);
   }


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