I recently have my program suddenly got a problem. My program needs to
spawn a process of XCOPY and then waits for it to terminate. The code
like this:
---------
STARTUPINFO si = {0};
si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = SW_HIDE;
PROCESS_INFORMATION pi = {0};

CString str = "cmd /c XCOPY .....";

if (::CreateProcess(NULL, (LPSTR)(LPCSTR)str, NULL, NULL, FALSE,
    NORMAL_PRIORITY_CLASS|CREATE_NO_WINDOW, NULL, lpszPath, &si, &pi))
{
    switch (::WaitForSingleObject(pi.hProcess, 3600000))
    {
    case WAIT_OBJECT_0:
        {
            DWORD dwRet;
            if (::GetExitCodeProcess(pi.hProcess, &dwRet))
            {
                ...
            }
        }
        break;
    case WAIT_TIMEOUT:
        ...
        break;
    default:
        break;
    }
    ::CloseHandle(pi.hProcess);
}
------
The problem is:

"SOMETIMES", the dwRet from GetExitCodeProcess will be
STILL_ACTIVE(259). However, I found that the XCOPY command had been
successfully copied the files and the cmd prompt had been closed. The
problem happened randomly.

The problem happened recently.

Thanks in advance.

- tony.