Re: dynamic menus

[Dan McMahill <mcmahill mtl mit edu>]

David NeÄas (Yeti) wrote:
> On Wed, Feb 21, 2007 at 10:40:07PM -0500, Dan McMahill wrote:
>
> > Question #1
> >
> >   - is it possible to keep certain menuitems in the xml and the 
> > associated GtkActionEntry but toggle if they are visible or not? 
> > Something like gtk_widget_hide() and gtk_widget_show()?  Or do I have to 
> > basically tear down the menus, regen the xml and create the menus again?
>
>
> 1. GtkAction has "visibility" property.
> 2. GtkUIManager can demerge UIs.
>
> Choose what's more suitable for your use case...


> > Question #2
> >
> >   - What does it take to change the text in some menus that already 
> > exist?  Do I have to do
> >   gtk_ui_manager_remove_action_group()
> >
> >   then create a new action group, insert to the ui manager and call 
> > gtk_action_group_add_actions?
> >
> > Or is there a simpler way?
>
>
> GtkAction has "label" property.

Thanks!  The visibility property worked for me.  For the sake of 
completeness in the archives here, what I ended up doing was something 
like this:

update_menu()
{
  GValue setfalse = { 0 };
  GValue settrue = { 0 };
  GValue setlabel = { 0 };
  GtkAction *a;

  g_value_init (&setfalse, G_TYPE_BOOLEAN);
  g_value_init (&settrue, G_TYPE_BOOLEAN);

  g_value_set_boolean (&setfalse, FALSE);
  g_value_set_boolean (&settrue, TRUE);

  g_value_init (&setlabel, G_TYPE_STRING);
  g_value_set_string (&setlabel, "my new menu text");

  a = gtk_action_group_get_action (main_actions, "MyAction");
  g_object_set_property (G_OBJECT (a), "visible", want_it_to_be_visible 

       ? &settrue : &setfalse);
  g_object_set_property (G_OBJECT (a), "label", &setlabel);
}

Seems to work nicely.  Note:  I have an old (2.4) gtk install on one 
system so I didn't use gtk_action_set_visible() which appeared in gtk-2.6.

-Dan