Re: multithreaded redrawing

["Michael Rothwell" <rothwell holly-springs nc us>]

When using threads with GTK, you might want to make UI updates only from the
main thread, and only send messages from the other threads to the main
thread.


----- Original Message -----
From: "Jochen Schaeuble" <psionic psionic de>
To: "Havoc Pennington" <hp redhat com>
Cc: <gtk-app-devel-list gnome org>
Sent: Wednesday, October 10, 2001 5:29 PM
Subject: Re: multithreaded redrawing


> Hi!
>   I have another problem with multithreading. I have an IO function
>   that reads the stdout of a program using pipes and dumps it into
>   a GtkText. This thread is started inside a Gtk+ callback function. If
>   I'm right during the execution of the callback function the
>   gdk_threads are already locked. Therefore my application hangs if I
>   try to lock it again. My problem is that I now get an error message:
>   Xlib: unexpected async reply (sequence 0x2398)!
>
>   What am I doing wrong?
>
> Thx in advance
>   jochen
>
> On Tue, Oct 02, 2001 at 09:45:04PM -0400, Havoc Pennington wrote:
> > Jochen Schaeuble <psionic psionic de> writes:
> > >   I tried to use a pthread to add content to a GtkCTree. My problem is
> > >   that from time to time the application suffers redraw problems (the
> > >   content is not redrawn properly). If this happens the application
> > >   needs to be restartet. Is it possible to do this? Is there
> > >   anything I have to take care of? I just passed a pointer to a
GtkCTree
> > >   instance as param to the pthread function (I didn't do any thread
> > >   initialization with glib).
> >
> > Read the FAQ about using GTK multithreaded. You need to init threads
> > and use locking.
> >
> > Havoc
> >
> > _______________________________________________
> > gtk-app-devel-list mailing list
> > gtk-app-devel-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
>
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