Steve Lamont wrote:
>
> To subscribers of the xforms list from spl@szechuan.ucsd.edu (Steve Lamont) :
>
> > Is there a way to close this file descriptor in a child process? The
> > child processes I'm starting don't need to have any access to graphics at
> > all, but *do* need to be started after the fl_initialize routine is
> > called.
>
> I guess first off I'd have to ask myself if this *is* absolutely
> necessary and redesign the code if it was not.
Hmmm, I don't think this statement helps very much in this case. Steven
Ness wrote already, that he "does need" this sequence order of function
calls.
I discovered a similar behavior with browsers. Especially, browsers are
in some situations (not to be explained here, but I can reproduce the
behaviour) only drawn partially. In my case, I had only the window
manager
decoration of the browser drawn. Then, like Steven, I could "use" the
browser
like usual, but nothing was visible. The browser looked like a glass
window,
well, a real physical window. I saw the fvwm decoration and the
background
within it, but no browser items.
The workaround for this is:
fd_mybrowser_frm= create_form_mybrowser_frm();
is called somwhere in 'main()', before 'fl_do_forms()'. Then, whenever I
hide the browser, I destroyed it (well, it *is* destroyed) and I
explicitly
freed the memory. For the next 'show' to be performed, I rebuilt the
browser
again with
fd_mybrowser_frm= create_form_mybrowser_frm();
whereever needed. This works fine for me. My application makes heavy use
of
'fork()' with IPC through PIPE's and I/O callbacks. I'm using Linux
2.0.25
and xforms 0.86 fix 1.
BTW: I also discovered this (partially drawing) behaviour since using
0.86,
in 0.84 this problem didn't arise. So I assume it's not IRIX specific.
Hope this helps.
Frank.
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