Re: [gtk-list] Re: Clist within scrolled window

[Kent Schumacher <kent structural-wood com>]

Federico Mena Quintero wrote:

> >  Agreed, but making that change does not make gtk_clist_moveto work correctly.
> >  One of the problems is that the 'upper' value in the vertical adjustment in gtk_clist
> >  is not updated as entries are added to the clist.
>
> Huh?  It *is* updated.  real_insert_row() calls adjust_adjustments()
> if the clist is not frozen.
>
> (If the clist is frozen, there's no point in calling gtk_clist_moveto() anyways).
>
> Or do you have a simple test program that exposes the bug?
>
>   Federico
>

Sorry about that - here is a little program.  Your clause about being
frozen got me thinking about widget states; I played around and it appears
that scrolling is dependent on the the parent  container(s) being shown.
This seems non-intuitive to me.  I can imagine cases where it might be
a problem to work around this behavior as well.

Thanks for the quick responses on this problem.
Kent


#include <stdio.h>
#include <gtk/gtk.h>

#define SHOW_ODDITY  (0)

int main(int argc, char *argv[]) {
   GtkWidget   *window,*clist,*scroll;
   int         i;
   char        buf[20];
   char        *entry[1];

   gtk_init(&argc,&argv);

   window   = gtk_window_new(GTK_WINDOW_TOPLEVEL);
   scroll   = gtk_scrolled_window_new(NULL,NULL);
   clist    = gtk_clist_new(1);

   gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
         GTK_POLICY_AUTOMATIC,GTK_POLICY_AUTOMATIC);

   gtk_clist_set_column_auto_resize(GTK_CLIST(clist),0,TRUE);

   entry[0] = buf;

   for (i = 1000 ; i < 1100 ; i++) {
      sprintf(buf,"%d",i);
      gtk_clist_append(GTK_CLIST(clist),entry);
   }

   gtk_container_add(GTK_CONTAINER(scroll),clist);
   gtk_container_add(GTK_CONTAINER(window),scroll);

   gtk_widget_show(clist);
   gtk_widget_show(scroll);

   if (! SHOW_ODDITY) {
      gtk_widget_show(window);
   }

   gtk_clist_select_row(GTK_CLIST(clist),30,0);
   gtk_clist_moveto(GTK_CLIST(clist),30,0,0.5,0.5);

   if (SHOW_ODDITY) {
      gtk_widget_show(window);
   }

   gtk_main();

   return(0);
}