gtk实现alt+f4功能

1.给窗口添加下面信号：

g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(callback_on_delete), window);

2.回调函数如下

static gboolean callback_on_delete(GtkWidget *window, GdkEvent *event, gpointer user_data){    gtk_main_quit();    return TRUE; //这句很重要}