static void
on_button_clicked (GtkButton *button, gpointer user_data)
{
g_print (“Hello World\n”);
}

static void
on_combobox_changed (GtkComboBox *combobox, gpointer user_data)
{
gint active_item = gtk_combo_box_get_active (combobox);
const gchar *active_id = gtk_combo_box_get_active_id (GTK_COMBO_BOX (combobox));
g_print (“Selected item: %d, active_id: %s\n”, active_item, active_id);
}

static void
on_entry_changed (GtkEntry *entry, gpointer user_data)
{
const gchar *text = gtk_entry_get_text (entry);
g_print (“Entry Text: %s\n”, text);
}

static void
on_entry_activate (GtkEntry *entry, gpointer user_data)
{
const gchar *text = gtk_entry_get_text (entry);
g_print (“Entry Text: %s\n”, text);
}

int
main (int argc, char **argv)
{
GtkBuilder *builder = gtk_builder_new ();
GtkWidget *window;
GtkWidget *button;
GtkWidget *combobox;
GtkWidget *entry;

gtk_init (&argc, &argv);
gtk_builder_add_from_file (builder, “demo.glade”, NULL);

window = GTK_WIDGET (gtk_builder_get_object (builder, “window”));
button = GTK_WIDGET (gtk_builder_get_object (builder, “button”));
combobox = GTK_WIDGET (gtk_builder_get_object (builder, “combobox”));
entry = GTK_WIDGET (gtk_builder_get_object (builder, “entry”));

gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);

g_signal_connect (window, “destroy”, G_CALLBACK (gtk_main_quit), NULL);
g_signal_connect (button, “clicked”, G_CALLBACK (on_button_clicked), NULL);
g_signal_connect (combobox, “changed”, G_CALLBACK (on_combobox_changed), NULL);
g_signal_connect (entry, “changed”, G_CALLBACK (on_entry_changed), NULL);
g_signal_connect (entry, “activate”, G_CALLBACK (on_entry_activate), NULL);

g_object_unref (G_OBJECT (builder));
gtk_widget_show (window);

gtk_main ();
return 0;
}
gcc \((pkg-config --cflags gtk+-3.0) -o demo demo.c \) (pkg-config –libs gtk+-3.0)

或 ¶

gcc -o demo demo.c pkg-config --cflags --libs gtk+-3.0