Re: i want to add different visibility to controls on notebook page

[Iago Rubio <iago rubio hispalinux es>]

On Tue, 2004-11-02 at 03:35, Vinod Joseph wrote:
> Hi Iago
>
> Could you tell me how to obtain the page_num effectively..
>
> The issue is GTK writes only on gtk_main and your page number is
> always the maximum number of pages....

Yes sorry use:
gint gtk_notebook_get_current_page   (GtkNotebook *notebook);

> So...only the last page settings are effective on giving the
> if ( gtk_notebook_get_n_pages(GTK_NOTEBOOK(notebook)-1)
>  { do this controls for the other pages...etc }
> else if {
>  do controls for LAST PAGE
> }

My fault.

> Here the logic for controls is simplified to differentiate only last page...
>
> But, only LAST PAGE controls work...bcoz on gtk_main() call - the
> number of pages is the total value and my number is all even
> numbers....2/4/6/8 for 4 actual pages..

Just add a check for the page number at function's start - 
cur_pages = gtk_notebook_get_current_page(notebook); - and replace
"page_num"  with "cur_pages" in the function's body.

> Thank you for your assistance

You're welcome.

> Joe
>
>
> On Mon, 01 Nov 2004 16:20:31 +0100, Iago Rubio <iago rubio hispalinux es> wrote:
> > On Mon, 2004-11-01 at 09:58, Vinod Joseph wrote:
> > > Hi David
> > >
> > > My controls are outside the notebook widget..
> > >
> > > Design as shown in attached text file
> > >
> > > But i am not able to correctly disable or unrealize widgets for a
> > > particular page in notebook....
> >
> > Use the notebook's "switch-page" signal and gtk_widget_set_sensitive()
> > or g_object_set().
> >
> > // EXAMPLE
> >
> > typedef struct _TheButtons {
> >        GtkWidget* button_next;
> >        GtkWidget* button back;
> > } TheButtons;
> >
> > void create_notebook()
> > {
> >
> > TheButtons* buttons = g_malloc0(sizeof(TheButtons));
> >
> > // create the notebook
> > // create the buttons namely back and next in this example
> >
> > buttons->button_next = back;
> > buttons->button_back = next;
> >
> > g_signal_connect(G_OBJECT(notebook), "switch-page",
> >                        G_CALLBACK(notebook_page_switched),
> >                        buttons);
> >
> > g_signal_connect_swapped(G_OBJECT(notebook), "destroy",
> >                        g_free,
> >                        buttons);
> >
> > }
> >
> > void
> > notebook_page_switched(GtkNotebook *notebook,
> >                       GtkNotebookPage *page,
> >                       guint page_num,
> >                       gpointer user_data)
> > {
> >  TheButtons* buttons;
> >  buttons = (TheButtons*) user_data;
> >  gboolean issensitive;
> >
> >  if( page_num == 0){
> >    g_object_set(G_OBJECT(buttons->button_back),
> >      "sensitive", FALSE, NULL);
> >  }else{
> >    g_object_get(G_OBJECT(buttons->button_back),
> >      "sensitive",&issensitive, NULL);
> >    if( !issensitive ){
> >      g_object_set(G_OBJECT(buttons->button_back),
> >        "sensitive", TRUE, NULL);
> >    }
> >  }
> >  if( page_num ==
> >    (gtk_notebook_get_num_pages(notebook) - 1) ){
> >    g_object_set(G_OBJECT(buttons->button_next),
> >      "sensitive", FALSE, NULL);
> >
> >  }else{
> >    g_object_get(G_OBJECT(buttons->button_next),
> >      "sensitive",&issensitive, NULL);
> >    if( !issensitive ){
> >      g_object_set(G_OBJECT(buttons->button_next),
> >        "sensitive", TRUE, NULL);
> >    }
> >  }
> > }
> >
> > It's quick written from memory so it can contain errors.
> > --
> > Iago Rubio
-- 
Iago Rubio