Re: [gtk-list] RE: GtkProgressBar && RE: updating a progress bar in a loop

[Chris Black <cblack wilma ifas ufl edu>]

> On 05-Mar-98 Chris Black wrote:
> > I run gtk_init, create the progress bar, add a timeout that starts
> > my 
> > loop, within the loop I call gtk_progress_bar_update but the
> > display doesn't 
> > seem to change. 
> 
> Drawing updates usually only happen when you are in gtk_main. You can
> force them, however using something like:
> 
> while (gtk_events_pending())
>         gtk_main_iteration();
> 
> inside you're respective functions that change the progress bar.
Hmm, but since I call the loop from inside the timeout, shouldn't that 
be in gtk_main? I thought the timeouts only start happening after gtk_main is 
entered. My flow is sorta like:
/* global vars */
GtkWidget *pbar;

int main(int argc, char *argv[]) {
	/* setup vars and such here, including the struct for request */
	gtk_init(&argc, &argv);
	pbar = create_progress_bar();
	gtk_timeout_add(100, (GtkFunction) progress_timeout, request);
	gtk_main();

 	return 0;
}

and progress_timeout looks like:
gint progress_timeout (gpointer data) {
  goloopy(data);
  printf("I did some stuff\n");
  return FALSE;
}

and goloopy looks like:
int goloopy(req_struct *req) {
	/* setup stuff */
	/* more setup stuff */
	while(var) {
		/* do some loop stuff */
		gtk_progress_bar_update 
			(GTK_PROGRESS_BAR (pbar), (gfloat) percent);
		if(somecond) { var = 0; }
	}
	return 0;
}




of course, this is just an outline.

Chris