http://www.iwobz.com C.yy's blog~~ Mon, 06 Sep 2010 17:33:28 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 http://www.iwobz.com/?p=894 http://www.iwobz.com/?p=894#comments Mon, 06 Sep 2010 17:33:28 +0000 admin http://www.iwobz.com/?p=894 http://www.iwobz.com/?feed=rss2&p=894 0 http://www.iwobz.com/?p=889 http://www.iwobz.com/?p=889#comments Sun, 05 Sep 2010 12:15:56 +0000 admin http://www.iwobz.com/?p=889 http://www.iwobz.com/?feed=rss2&p=889 0 http://www.iwobz.com/?p=878 http://www.iwobz.com/?p=878#comments Sun, 05 Sep 2010 03:03:05 +0000 admin http://www.iwobz.com/?p=878 http://www.iwobz.com/?feed=rss2&p=878 0 http://www.iwobz.com/?p=876 http://www.iwobz.com/?p=876#comments Fri, 03 Sep 2010 16:23:57 +0000 admin http://www.iwobz.com/?p=876 http://www.iwobz.com/?feed=rss2&p=876 0 http://www.iwobz.com/?p=868 http://www.iwobz.com/?p=868#comments Thu, 02 Sep 2010 16:38:37 +0000 admin http://www.iwobz.com/?p=868 http://www.iwobz.com/?feed=rss2&p=868 0 http://www.iwobz.com/?p=820 http://www.iwobz.com/?p=820#comments Wed, 01 Sep 2010 13:33:14 +0000 admin http://www.iwobz.com/?p=820 http://www.iwobz.com/?feed=rss2&p=820 2 http://www.iwobz.com/?p=806 http://www.iwobz.com/?p=806#comments Wed, 01 Sep 2010 02:30:28 +0000 admin http://www.iwobz.com/?p=806 http://www.iwobz.com/?feed=rss2&p=806 0 http://www.iwobz.com/?p=789 http://www.iwobz.com/?p=789#comments Tue, 31 Aug 2010 12:00:47 +0000 admin http://www.iwobz.com/?p=789 ConstructL();         …         CleanupStack::PopAndDestroy(); } 　　在MainL中的第一行完成了对foo的内存分配，随后将其压入清除栈（在此过程中会调用CFoo的默认构造函数，因此在其默认的构造函数中不能做任何事情），接着再调用CFoo的ConstructL()完成构造。待用完foo之后将其弹出清除栈并销毁之。 说明： 　　１）、函数名后的L“通常”表示函数会在遇到异常时leave，注意前面说的只是“通常”。如果能够保证后面的程序不会出现异常，函数中也可能不会使用清除栈。这样做的目的在于让程序员时刻意识到哪些函数可能发生异常退出，从而可以设置适当的TRAP来捕捉异常。 　　２）、函数名后的C一般表示“Cleanup Stack”，暗示函数具有将对象指针压入清除栈的功能。 　　在实际的应用中，许多类都引入了自定义的静态NewL()和NewLC()函数，替换了原来重载的new操作符和对ConstructL的调用，从而在形式上与标准C++的构造方式更为一致。 class CFoo : public CBase { public:         virtual ~CFoo(); public:         static CFoo* [...]]]> http://www.iwobz.com/?feed=rss2&p=789 2 http://www.iwobz.com/?p=766 http://www.iwobz.com/?p=766#comments Tue, 31 Aug 2010 10:36:51 +0000 admin http://www.iwobz.com/?p=766 http://www.iwobz.com/?feed=rss2&p=766 0 http://www.iwobz.com/?p=754 http://www.iwobz.com/?p=754#comments Tue, 31 Aug 2010 04:47:21 +0000 admin http://www.iwobz.com/?p=754 http://www.iwobz.com/?feed=rss2&p=754 0