在另一个线程(而不是主线程）中创建窗口

我有一个函数：

HWND createMainWindow(P2p_Socket_Machine * toSend){
    HWND hMainWnd = CreateWindow( 
        L"Class",/*(LPCWSTR) nameOfConference.c_str()*/L"Chat",  WS_OVERLAPPED | WS_MINIMIZEBOX | WS_SYSMENU, 
    CW_USEDEFAULT, 0, 600,400, 
    (HWND)NULL, (HMENU)NULL, 
    /*(HINSTANCE)hlnstance*/NULL, NULL 
    ); 
    if (!hMainWnd) { 
        MessageBox(NULL, L"Cannot create main window", L"Error", MB_OK); 
        return 0; 
    }
    CreateWindowA("LISTBOX",NULL, WS_CHILD|WS_VISIBLE|WS_BORDER|WS_VSCROLL|LBS_NOTIFY|LBS_MULTIPLESEL,310,30,255,275,hMainWnd,(HMENU)List_Box,NULL,NULL);
    CreateWindowExA(NULL,"BUTTON", "Refresh", WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_DEFPUSHBUTTON,385,310,100,24,hMainWnd,(HMENU)Button_Refresh, NULL ,NULL);
    CreateWindowExA(NULL,"BUTTON", "Send", WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_DEFPUSHBUTTON,385,334,100,24,hMainWnd,(HMENU)Button_Send, NULL ,NULL);
    CreateWindowExA(NULL,"BUTTON", "New", WS_TABSTOP|WS_VISIBLE|WS_CHILD|BS_DEFPUSHBUTTON,385,354,100,24,hMainWnd,(HMENU)Button_New, NULL ,NULL);
    CreateWindowA("EDIT",0,WS_BORDER|WS_VISIBLE|WS_CHILD|ES_LEFT|ES_MULTILINE|WS_VSCROLL|WS_DISABLED,
    10,30,265,275,hMainWnd,(HMENU)Text_Box_Get,NULL,NULL);
    CreateWindowA("EDIT",0,WS_BORDER|WS_VISIBLE|WS_CHILD|ES_LEFT|ES_MULTILINE|WS_VSCROLL,
    10,320,265,45,hMainWnd,(HMENU)Text_Box_Send,NULL,NULL);
    SetWindowLongPtr(hMainWnd,GWLP_USERDATA,(LONG_PTR)toSend);
    ShowWindow(hMainWnd, SW_SHOW); 
    //UpdateWindow(hMainWnd);
    return hMainWnd;
}

这是我程序的主要部分：

int WINAPI WinMain(HINSTANCE hlnstance, HINSTANCE hPrevInstance, LPSTR IpCmdLine, int 
nCmdShow) 
{
WNDCLASSEX wc; 
    wc.cbSize = sizeof(wc); 
    wc.style = CS_HREDRAW | CS_VREDRAW; 
    wc.lpfnWndProc = MyFunc; 
    wc.cbClsExtra = 0; 
    wc.cbWndExtra = 0; 
    wc.hInstance = hlnstance; 
    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); 
    wc.hCursor = LoadCursor(NULL, IDC_ARROW); 
    wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wc.lpszMenuName = NULL; 
    wc.lpszClassName = L"Class"; 
    wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
HWND toSend = createMainWindow(P2pSocket);
//some code
hThread = CreateThread(NULL, 0, ClientThread, 
            Message2, 0, &dwThreadId);
        if (hThread == NULL)
        {
            cout<<"Create thread filed";
            exit(10);
        }

    while (GetMessage(&msg, NULL, 0, 0)) { 
        TranslateMessage(&msg); 
        DispatchMessage(&msg);
    }
    return msg.wParam;   

当我在程序的主要部分调用函数createMainWindow（）时它正常工作，但当我运行它时我的线程（ClientThread）不起作用。我已经读到我应该只在主线程中创建窗口。这是真的吗？如果这是真的，那么从另一个线程调用这个函数的最简单方法是什么？

谢谢大家。现在我知道这个问题了，但我一直在想办法。我的客户端线程代码是：

while(1){
    vector<HWND> AllHandlers;
    pair<string,string> Answer = Pointer->receiveMsgByUdp();
    if(!Pointer->isMyLocalAddress(Answer.first)){
        int type = messageUdpContentType(Answer.second);
        switch(type){
        case 0 :
            Pointer->sendMsgToIpUdp(Answer.first,"<?xml version='1.0'?><accepted/>");
            AllHandlers = getAllHandlersOfElementsOnWindowsByIdentityCode(Pointer->getAllHandlers(),List_Box);
            for(vector<HWND>::iterator j = AllHandlers.begin();j!=AllHandlers.end();j++)
                if(SendMessageA(*j, LB_FINDSTRINGEXACT, 0, (LPARAM)Answer.first.c_str())==LB_ERR)
                    SendMessageA(*j, LB_ADDSTRING, 0, (LPARAM)Answer.first.c_str());
            break;
        case 1 :
            AllHandlers = getAllHandlersOfElementsOnWindowsByIdentityCode(Pointer->getAllHandlers(),List_Box);
            for(vector<HWND>::iterator j = AllHandlers.begin();j!=AllHandlers.end();j++)
                if(SendMessageA(*j, LB_FINDSTRINGEXACT, 0, (LPARAM)Answer.first.c_str())==LB_ERR)
                    SendMessageA(*j, LB_ADDSTRING, 0, (LPARAM)Answer.first.c_str());
            break;
        case 2 :
            AllHandlers = getAllHandlersOfElementsOnWindowsByIdentityCode(Pointer->getAllHandlers(),List_Box);
            for(vector<HWND>::iterator j = AllHandlers.begin();j!=AllHandlers.end();j++)
                if((i = SendMessageA(*j, LB_FINDSTRINGEXACT, 0, (LPARAM)Answer.first.c_str()))!=LB_ERR)
                    SendMessageA(*j,LB_DELETESTRING, 0, (LPARAM)Answer.first.c_str());
            break;
        case 3 :
            userReply = MessageBoxW(NULL, L"Принять приглашение на конференцию?",
                    L"", MB_YESNO | MB_ICONQUESTION); 
            if (userReply==IDYES){
                //todo: Проверка на создание встречи, в которой уже состоишь
                string nameOfConf = fetchNameOfInviteConf(Answer.second);
                Pointer->createConference(nameOfConf);
                HWND toSendTo = createMainWindow(Pointer);
                Pointer->setHandlerInfo(nameOfConf,toSendTo);               
                Pointer->addNewMemberToConference_ServerType(nameOfConf,Answer.first);
                string toSend = string("<?xml version='1.0'?><inviteAccepted>") + nameOfConf + string("</inviteAccepted>");
                Pointer->sendMsgToIpUdp(Answer.first,toSend);
            }
            break;
        case 4 :
            string nameOfConf = fetchNameOfInviteAcceptConf(Answer.second);
            toSend.clear();
            Participants.clear();
            Participants = Pointer->getCurrentParticipants(nameOfConf);
            toSend+="<?xml version='1.0'?>";
            toSend+="<conference>";
            toSend+="<nameOfConference>";
            toSend+=nameOfConf;
            toSend+="</nameOfConference>";
            for(vector<string>::iterator i = Participants.begin();i!=Participants.end();i++){
                toSend+="<participant>" + *i + "</participant>";
            }
            toSend+="</conference>";

            Pointer->addNewMemberToConference_ClientType(nameOfConf,Answer.first);
            Pointer->sendToIpTcp(Answer.first,toSend);
            break;
    }

函数receiveMsgByUdp（）会停止此线程，直到收到消息为止。我为缺乏知识而道歉，但我可以使用什么功能或其他东西来解决这个问题。我应该将方法receiveMsgByUdp（）重写为异步方法吗？或者我如何调用函数createMainWindow（）在主线程上运行？关于最后一个变体：我如何在纯winapi中做到这一点，我找不到任何简单的例子。有人能提供代码片段吗。再次感谢）