#include <gtk/gtk.h> void hello (void) { g_print ("hello world\n"); } int main (int argc, char *argv[]) { GtkWidget *window, *button; gtk_init (&argc, &argv); window = g_object_connect (gtk_widget_new (gtk_window_get_type (), "user_data", NULL,"type", GTK_WINDOW_TOPLEVEL, "title", "hello world","allow_grow", FALSE, "allow_shrink", FALSE,"border_width", 10, NULL), "signal::destroy", gtk_main_quit, NULL, NULL); button = g_object_connect (gtk_widget_new (gtk_button_get_type (), "GtkButton::label", "hello world","GtkWidget::parent", window, "GtkWidget::visible", TRUE, NULL),"signal::clicked", hello, NULL, NULL); gtk_widget_show (window); gtk_main (); return 0; }