#include int main (int argc, char *argv[]) { GtkWidget *window; /* Initialize GTK+ and all of its supporting libraries. */ gtk_init (&argc, &argv); /* Create a new window, give it a title and display it to the user. */ window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_title (GTK_WINDOW (window), "Hello World"); gtk_widget_show (window); /* Hand control over to the main loop. */ gtk_main (); return 0; }