Image resize in GTK

#include
#include

gboolean resize_image(GtkWidget *widget, GdkEvent *event, GtkWidget *window)
{
    GdkPixbuf *pixbuf = gtk_image_get_pixbuf(GTK_IMAGE(widget));
    if (pixbuf == NULL)
    {
        g_printerr("Failed to resize image\n");
        return 1;
    }

    printf("Width: %i\nHeight%i\n", widget->allocation.width, widget->allocation.height);

    pixbuf = gdk_pixbuf_scale_simple(pixbuf, widget->allocation.width, widget->allocation.height, GDK_INTERP_BILINEAR);

    gtk_image_set_from_pixbuf(GTK_IMAGE(widget), pixbuf);

    return FALSE;
}

int main(int argc, char **argv)
{
    GtkWidget *window = NULL;
    GtkWidget *image = NULL;

    if (argc < 2 || argc > 3)
    {
        g_printerr("Usage: %s \n", argv[0]);
        return 1;
    }

    /* Initialize */
    gtk_init(&argc, &argv);

    /* Creat Widgets */
    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    image = gtk_image_new_from_file(argv[1]);
    if (image == NULL)
    {
        g_printerr("Could not open \"%s\"\n", argv[1]);
        return 1;
    }


/**/
    GdkPixbuf *pixbuf = gtk_image_get_pixbuf(GTK_IMAGE(image));
    if (pixbuf == NULL)
    {
        g_printerr("Failed to resize image\n");
        return 1;
    }

    printf("Width: %i\nHeight%i\n", image->allocation.width, image->allocation.height);

    pixbuf = gdk_pixbuf_scale_simple(pixbuf, 600, 400, GDK_INTERP_BILINEAR);

    gtk_image_set_from_pixbuf(GTK_IMAGE(image), pixbuf);
/**/


    /* attach standard event handlers */
    g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
    //g_signal_connect(image, "expose-event", G_CALLBACK(resize_image), (gpointer)window);

    gtk_container_add(GTK_CONTAINER(window), image);
    gtk_widget_show_all(GTK_WIDGET(window));

    gtk_main();

    return 0;
}