symbian的线程和活动对象的实现，线程是使用主线程，但是有活动对象分配器的完整安装过程。,symbian thread and activities achieve the object, the thread is to use the main thread, but there is a complete distributor Activity object installation process.

主要内容是：Symbian进程、线程及多任务机制Active等-Main contents: Symbian process, thread and multi-task mechanism Active, etc.