多个进程共享DLL中全局数据。DLL中设有全局数据。进程A和进程B共享,进程A改变共享值，进程b获得的将是改变后的值。 多个进程线程共享dll中的全局数据。-A global variable is set in DLL and other process can share the same variable. ProcessA changed the variable, then processB also can get changed value.