如果我想从GTK+应用程序启动一个程序，我应该使用哪个GTK+子进程/线程/程序执行/等等？

#include <gtk/gtk.h>
#include <glib.h>

void launch_program(GtkWidget *widget, gpointer data)
{
    gchar *program = "/path/to/program";
    gchar *argv[] = {program, NULL};

    GError *error = NULL;
    GPid pid;
    if (!g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, &pid, &error))
    {
        g_print("Failed to launch program: %s\n", error->message);
        g_error_free(error);
    }
    else
    {
        g_print("Program launched successfully with PID: %d\n", pid);
    }
}

int main(int argc, char *argv[])
{
    gtk_init(&argc, &argv);

    GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);

    GtkWidget *button = gtk_button_new_with_label("Launch Program");
    g_signal_connect(button, "clicked", G_CALLBACK(launch_program), NULL);
    gtk_container_add(GTK_CONTAINER(window), button);

    gtk_widget_show_all(window);

    gtk_main();

    return 0;
}