GTK+ tutorial 8

//http://www.youtube.com/user/thecplusplusguy
//Thanks for the typed in code to Tapit85
#include <gtk/gtk.h>
#include <cstring>

static void toggled_func(GtkWidget* widget, gpointer data)
{
    if(strcmp((char*)data, "1") == 0)
        if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)))
            g_print("Button %s is set to active\n", (char*)data);
        else
            g_print("Button %s is set to deactive\n", (char*)data);

    if(strcmp((char*)data, "2") == 0)
        if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)))
            g_print("Button %s is set to active\n", (char*)data);
        else
            g_print("Button %s is set to deactive\n", (char*)data);

    if(strcmp((char*)data, "3") == 0)
        if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)))
            g_print("Button %s is set to active\n", (char*)data);
        else
            g_print("Button %s is set to deactive\n", (char*)data);

    if(strcmp((char*)data, "4") == 0)
        if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget)))
            g_print("Button %s is set to active\n", (char*)data);
        else
            g_print("Button %s is set to deactive\n", (char*)data);
}

int main(int argc, char* argv[])
{
    gtk_init(&argc, &argv);
    GtkWidget *window, *radio, *radio2, *hbox;
    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    g_signal_connect(window, "delete-event", G_CALLBACK(gtk_main_quit), NULL);

    hbox = gtk_hbox_new(0,0);

    radio = gtk_radio_button_new_with_label(NULL, "label 1");
    gtk_box_pack_start(GTK_BOX(hbox), radio, 0,0,0);
    g_signal_connect(radio, "toggled", G_CALLBACK(toggled_func), (gpointer)"1");

    radio2 = gtk_radio_button_new_with_label(gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio)), "label 2");
    gtk_box_pack_start(GTK_BOX(hbox), radio2, 0,0,0);
    g_signal_connect(radio2, "toggled", G_CALLBACK(toggled_func), (gpointer)"2");

    radio2 = gtk_radio_button_new_with_label(gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio)), "label 3");
    gtk_box_pack_start(GTK_BOX(hbox), radio2, 0,0,0);
    g_signal_connect(radio2, "toggled", G_CALLBACK(toggled_func), (gpointer)"3");

    radio2 = gtk_radio_button_new_with_label(gtk_radio_button_get_group(GTK_RADIO_BUTTON(radio)), "label 4");
    gtk_container_add(GTK_CONTAINER(window),hbox);
    gtk_box_pack_start(GTK_BOX(hbox), radio2, 0,0,0);
    g_signal_connect(radio2, "toggled", G_CALLBACK(toggled_func), (gpointer)"4");

//  gtk_container_add(GTK_CONTAINER(window), hbox); // ? Runtime-Warning ?

    gtk_widget_show_all(window);
    gtk_main();
    return 0;
}