展示了Qt中网络类的用法，利用新浪微博的API实现了通过手机发微博关闭电脑的功能，当然，你可以修改成实现任何功能。（注意：需要有新浪微博才可使用，其中应用的公钥私钥有新浪提供，请自行申请。）-Shows network usage in Qt API to shut down your computer through the cell phone microblogging Sina microblogging, of course, you can modify into any funct

Linux/unix下用C++语言完成QT按键事件的编程实例。-Under Linux/unix complete programming examples QT key events in C++.

QT平台下实现的刻度尺，可随键盘按键增加或减少，并实时显示当前刻度(The scale of the QT platform can be increased or reduced with the keyboard key, and the current scale is displayed in real time.)