[Glade-users] Spin button ... need help

[Damon Chaplin]

Valery Avaux wrote:
> 
> Hello,
> 
> I'm trying for the first to use Glade and I have only a few experience
> in C programming...
> 
> I'm try to use spin button and scrollbars to send value to global
> variables. I've tried some GtkSignal but none seems to work.. I suppose
> I did it in a wrong way.
> 
> Could someone explain me how to send the value of my spin button
> directly to a variable. For the scrollbar, I've got the same problem but
> there i need to able to modify the value while the program is running.

You probably want to connect to the "changed" signal of the GtkSpinButton's
adjustment, as described in the FAQ:

4.9 How do I connect to GtkAdjustment signals?

Glade doesn't support this at present, but you can set it up manually, in a
similar way to question 3.6.

When you create the window, get a pointer to the widget containing the
adjustment, and connect to the "changed" or "value_changed" signals:

  window1 = create_window1 ();
  hscale = lookup_widget (window1, "hscale1");
  gtk_signal_connect (GTK_OBJECT (GTK_RANGE (hscale)->adjustment),
                      "changed", GTK_SIGNAL_FUNC (on_adjustment_changed),
                      NULL);

The scrollbar is similar.

Damon