说明：  一个例子程序，使用linux +gtk+gnome,主要功能是建立一个对话框，打印hello world，有详细的注释，如何编译以及怎样运行，是一个很好的学习上手的例子程序。
(An example, the use of linux+ Gtk+ Gnome, the main function is to create a dialog box, print hello world, has detailed notes on how to compile and how to run, is a good example of learning-to-use procedures.)