SpinButton.connectOutput

gulong connectOutput(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  bool)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  gtk.spin_button.SpinButton)))
   &&  Parameters!T.length <  2)

Connect to Output signal.

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;
 }

Parameters

`callback`	signal callback delegate or function to connect `bool callback(gtk.spin_button.SpinButton spinButton)` `spinButton` the instance the signal is connected to (optional) `Returns` true if the value has been displayed
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID