电驴的MAC源代码，很简单似乎，但实际可以学习到人家是如何组织一个看似简单的软件的，学习用。-EDonkey' s MAC source code, it seems very simple, but that can actually be to other people are studying how to organize a seemingly simple software, the study used.

ent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition t