🚀 go-pugleaf

In article <1992Jul24.040517.3375@tc.cornell.edu> reed@theory.tc.cornell.edu writes:
>I have a X client (motif widget set being used) that spawns a number of
>childen.  Now, since I use fork(), all file descripters are copied over to
>the children.  This is fine and dandy, but what I really want is to capture
>the output (stderr & stdout) from the children in a text widget (motif) in 

>if I am hung up in an XtMainLoop call (or do I need to change to something
>else [gasp! handle my own events????])?  I thought of using a SIGIO signal
>handler, but have been unable to get this to work (then again, it's my first

I *think* the clue is to lose your XtMainLoop() (i.e. don't use it)
and use something like...

   if (XtAppPending(ac))
   {
      XtAppNextEvent(ac, &event);
      XtDispatchEvent(&event);
   }
   else
   {
      /* do the read_from_pipe_thing() */
   }

The XtAppNextEvent() blocks waiting for input so I think you want
the XtAppPending() check...This doesn't really have to been an if/else
...but whatever...

oh...and I think the signals are a no-no (I don't believe they were
designed or intended for interprocess communication...)

Matthew Kerr
Kvam data as
Nikkelveien 14, N-4300 Sandnes, Norway
Tel: + 47 4 62 37 66
Fax: + 47 4 62 39 85