基于Symbian OS的手机开发与应用实践第12章代码。主要讲各种时钟，倒计时，计时器的使用。-Symbian OS-based mobile phone development and application of the Chapter 12 code of practice. The main speakers of various clock, countdown, timer use.

symbian手机开发 实现定时器功能 一个倒计时的软件开发-Development and implementation of symbian mobile phone features a countdown timer software development