# SpinButton (Vala)

Tiffany Antopolski
tiffany.antopolski@gmail.com 2012
Retrieve an integer or floating point number.
Mario Blättermann
mario.blaettermann@gmail.com 2011, 2013, 2016, 2018, 2021

# SpinButton

Choose a number, by entering it or by clicking on the -/+ buttons!

/* This is the application. */ public class MyApplication : Gtk.Application { Gtk.Label label;

/* Override the 'activate' signal of GLib.Application. */ protected override void activate () { var window = new Gtk.ApplicationWindow (this); window.title = "SpinButton Example"; window.set_default_size (210, 70); window.set_border_width (5);

var spinbutton = new Gtk.SpinButton.with_range (0, 100, 1); spinbutton.set_hexpand (true);

label = new Gtk.Label ("Choose a number");

var grid = new Gtk.Grid (); grid.attach (spinbutton, 0, 0, 1, 1); grid.attach (label, 0, 1, 1, 1);

spinbutton.value_changed.connect (this.value_changed_cb);

window.add (grid); window.show_all (); }

void value_changed_cb (Gtk.SpinButton spin) { label.set_text ("The number you selected is %.0f.".printf (spin.get_value())); } }

/* main creates and runs the application. */ public int main (string[] args) { return new MyApplication ().run (args); }

In diesem Beispiel haben wir Folgendes verwendet:

Gtk.SpinButton