It's supposed to fill the entire spinbutton allocation apart from the
buttons
priv->entry = gtk_entry_new ();
gtk_entry_set_width_chars (GTK_ENTRY (priv->entry), 0);
gtk_entry_set_max_width_chars (GTK_ENTRY (priv->entry), 0);
+ gtk_widget_set_hexpand (priv->entry, TRUE);
+ gtk_widget_set_vexpand (priv->entry, TRUE);
g_signal_connect (priv->entry, "activate", G_CALLBACK (gtk_spin_button_activate), spin_button);
gtk_container_add (GTK_CONTAINER (priv->box), priv->entry);