哦,应该是工具类吧,代码是这样子的,在系统主窗口析构函数体末尾处加的。CMainFrame::~CMainFrame(){#ifdef GROUPWINDOW DestroyGroupWnd();#endif
#ifdef PROPERTYWINDOW //属性窗口 DestroyPropWnd();#endif//Added end
//added by hq CUtil util; util.DeleteDirContent("C:\\backup");
//end added}