windows - CancelSynchronousIo 是否与 WNetAddConnection2 一起使用？

Question

我正在尝试取消对 WNetAddConnection2 的调用，但失败了与 CancelSynchronousIo .

对 CancelSynchronousIo 的调用成功，但实际上没有任何取消。

我正在使用在 Windows 7 x64 上运行的 32 位控制台应用程序。

有人成功过吗？我在做傻事吗？这是一个示例控制台应用程序(需要与 mpr.lib 链接):

DWORD WINAPI ConnectThread(LPVOID param)
{
    NETRESOURCE nr;
    memset(&nr, 0, sizeof(nr));
    nr.dwType = RESOURCETYPE_ANY;
    nr.lpRemoteName = L"\\\\8.8.8.8\\bog";

    // result is ERROR_BAD_NETPATH (i.e. the call isn't cancelled)
    DWORD result = WNetAddConnection2(&nr, L"pass", L"user", CONNECT_TEMPORARY);

    return 0;
}

int _tmain(int argc, _TCHAR* argv[])
{
    // Create a new thread to run WNetAddConnection2
    HANDLE hThread = CreateThread(0, 0, ConnectThread, 0, 0, 0);
    if (!hThread)
        return 1;

    // Retry the cancel until it fails; keep track of how often
    int count = 0;
    BOOL ok;
    do
    {
        // Sleep to give the thread a chance to start
        Sleep(1000);
        ok = CancelSynchronousIo(hThread);
        ++count;
    }
    while (ok);

    // count will equal two here (i.e. one successful cancellation and
    // one failed cancellation)

    // err is ERROR_NOT_FOUND (i.e. nothing to cancel) which makes
    // sense for the second call
    DWORD err = GetLastError();

    // Wait for the thread to finish; this takes ages (i.e. the
    // WNetAddConnection2 call is not cancelled)
    WaitForSingleObject(hThread, INFINITE);

    return 0;
}

Answer 1

根据 Larry Osterman 的说法(我希望他不介意我引用他的话):“评论中回答了这个问题:wnetaddconnection2 不是一个简单的 IOCTL 调用。”所以答案(不幸的是)是否定的。