Re: forcing a a widget_queue_draw

["Adrian E. Feiguin" <afeiguin uci edu>]

Hi,
   I probably wasn't clear. I just want to initialize my GUI. Suppose 
that I have a list of buttons (something like radio buttons, although I 
implement it myself in a customized fashion). I have a list of widgets, 
if widget_list[n] == active_widget, then the button is down, else it's 
up. So I do something like this:

...
       if(widget_list[n] == active_widget){
           GTK_BUTTON(buttons[n])->button_down = TRUE;
           GTK_TOGGLE_BUTTON(buttons[n])->active = TRUE;
           gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(buttons[n]), 
TRUE);
       }else{
           GTK_BUTTON(buttons[n])->button_down = FALSE;
           GTK_TOGGLE_BUTTON(buttons[n])->active = FALSE;
           gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(buttons[n]), 
FALSE);
       }
       gtk_widget_queue_draw(buttons[n]);
       n++;
...

And its simply doesn't work as intended. The button does not appear down 
until I force the expose event. With gtk-1 I would use gtk_widget_draw 
instead of queue draw, and it worked just fine. But now in gtk-2 there 
is no gtk_widget_draw. How do I force the widget to draw?
Thanks!
<ADRIAN>

Tristan Van Berkom wrote:

> On Mon, 31 Jan 2005 12:42:33 -0800, Adrian E. Feiguin <afeiguin uci edu> wrote:
>  
>
> > Hi all.
> >    This is an example, but there are many cases when I want to do
> > something similar:
> >
> > Suppose that I change the state of a toggle button with
> > gtk_toggle_button_set_active or gtk_widget_set_state. The widget just
> > wont draw properly until I move the mouse pointer over it forcing an
> > expose event. What's going on? in gtk-1 I would simply call
> > gtk_widget_draw, but now, event calling gtk_widget_queue_draw, the
> > widget won't update. Can anyone explain it to me, please?
> >    
>
> Hmm, 
>    seems like you're hijacking the main loop somewhere, you
> got a `while (42) { /* code body */ }' lying around in your code ?
>
> If its absolutely nescisary to implement the main program loop yourself;
> you can call:
>    `while (gtk_events_pending()) gtk_main_iteration_do (FALSE);' once
> every loop.
>
> Just a guess, OTOH maybe there is something wrong with your X server 
> installation (if your not recieving expose events or are unable to queue them).
>
> Cheers,
>                                         -Tristan
>
> .
>
>