output

The output signal can be used to change to formatting of the value that is displayed in the spin buttons entry.

// show leading zeros
static gboolean
on_output (GtkSpinButton *spin,
					 gpointer			 data)
{
	 GtkAdjustment *adjustment;
	 gchar *text;
	 int value;

	 adjustment = gtk_spin_button_get_adjustment (spin);
	 value = (int)gtk_adjustment_get_value (adjustment);
	 text = g_strdup_printf ("%02d", value);
	 gtk_entry_set_text (GTK_ENTRY (spin), text);
	 g_free (text);

	 return TRUE;
}

Returns: