一个vc6的项目放到vc8下重新编译这里死活过不去 查了些资料无果后来翻到一句老外的回答 If AfxGetMainWnd is called from the application’s primary thread, it returns the application’s main window according to the above rules. If the function is called from a secondary thread in the application
http://www.codeproject.com/Articles/552/Using-Worker-Threads Introduction Worker threads are an elegant solution to a number of problems about concurrent processing; for example, the need to keep the GUI active while a computation is being performed.