Re: gtk threads

[Russell Shaw <rjshaw netspace net au>]

Xiong Huan wrote:
> Can anybody help to explain a bit why it is necessary to call 
> gtk_main_iteration_do() in source_cb()? I think the customized event source 
> in above example and the built-in event source for X events have the same 
> priorities and they both have the chances to be executed when arrived. 
> However, if I commented out that line, the lable doesn't appeared. 
>
> BTW, it is not necessary to call gdk_threads_enter/leave in source_cb() since 
> source_db is actually called in event dispatching thread.
>
> Thanks.
>
> On Wednesday 14 July 2004 22:50, Todd Fisher wrote:
>
> > I left one other part out you need to also modify the source_cb
> > function:
> >
> > static gboolean
> > source_cb(gpointer data)
> > {
> >    g_printf("i:%d\n",*((gint*)data));
> >    gdk_threads_enter();
> >    gtk_main_iteration_do( FALSE );
> >    gdk_threads_leave();
> >    return TRUE;
> > }

I found that:

  gdk_threads_enter();
  gtk_main_iteration_do( FALSE );
  gdk_threads_leave();

is not needed. In my final post, the example
works without it (the label is shown ok).