The PyQt4 tutorial
< [:The PyQt4 tutorial:] >
最近在网上看到了一本PyQt4教程，写的浅显易懂，决定翻译过来与大家共享。
目录：
[:Introduction 简介:]
[:First Programs 第一个程序:]
[:Menus and Toolbars 菜单与工具条:]
[:Layout Management 层管理:]
[:Events and Signals 事件和信号:]
[:Dialogs 对话框:]
[:Widgets 插件:]
Drag and Drop
[:Drawing 绘图:]
[:Custom widgets 自定义插件:]
[:The Tetris game 俄罗斯方块游戏:]