Re: forcing a a widget_queue_draw

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

The buttons are all toggle buttons. I am using 
gtk_toggle_button_set_active to set the state of the button. When I 
toggle one button, all the otthers should "untoggle", but they won't 
look like that until I force the redraw. All the buttons are visible, 
but the draw the wrong state: they don't appear toggled or untoggled 
until I force the expose event with the mouse or another window.

I tried blocking the signal handler, it doesn't help.

Any ideas?
Thanks!
<ADRIAN>

Ben Johnson wrote:

> Are all the widgets in this list the same type?  What type are they?
> Are they toggle buttons?  (created with gtk_toggle_button_new() or
> similar?) Or are they radio buttons?  Or, if they are a new type defined
> by you, what widget are they sub-classed from?
>
> gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(buttons[n]), myboolean);
>
> ...should be all you need.  in fact, it's possible that setting the
> "button_down" and "active" properties directly is what's screwing things
> up.
>
> I assume you're calling gtk_widget_show() on these buttons before this
> code is running.  The buttons are visible, right?
>
> Do you have "toggled" a signal handler connected to these buttons?  In
> that signal handler, do you activate or de-activate any buttons in the
> array that did not receive the signal?  If yes, you'll probably want to
> block the signal before calling the .._set_active() function.
>
> (I'm kind of grasping at straws if you can't tell.  There are a lot of
> possibilities.)
>
> - Ben
>
>
> On Mon, Jan 31, 2005 at 02:29:23PM -0800, Adrian E. Feiguin wrote:
>  
>
> > 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
> > >
> > > .
> > >
> > >
> > >
> > >      
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> >    
>
>