EnumThreadWindows枚举线程的所有窗口

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BOOL CALLBACK EnumThreadWndProc(HWND hwnd, LPARAM lParam ){       std::list<HWND>* plist = (std::list<HWND>*)lParam;    plist->push_back(hwnd);    return true;}
int main(void){    CWnd* pWnd = CWnd::FindWindow(NULL, "360云盘");    if(pWnd)    {        DWORD dwtheadid;        DWORD dwProcessId;        //根据窗口得到线程ID,进程ID        dwtheadid = GetWindowThreadProcessId(pWnd->GetSafeHwnd(),&dwProcessId);        std::list<HWND> list1;        //枚举线程的所有窗口        EnumThreadWindows(dwtheadid,EnumThreadWndProc, (LPARAM)&list1);        //发消息给窗口打开一个对话框        pWnd->PostMessage(WM_USER+2017, 0, 0x00000002);        Sleep(3000);               std::list<HWND> list2;        //再次枚举线程的所有窗口        EnumThreadWindows(dwtheadid,EnumThreadWndProc, (LPARAM)&list2);                //查找刚打开的那个对话框        std::list<HWND>::iterator it = list2.begin();        for (; it!=list2.end(); it++)        {            if (std::find(list1.begin(),list1.end(), *it)==list1.end())            {                break;            }        }        if (it!=list2.end() )        {            //发送ESC键,关闭它            PostMessage(*it,WM_KEYDOWN, VK_ESCAPE, 0x00010001);        }    }    return 0;}

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