Re: CreateProcess in a loop

This is the actual code.

bool CNetworkDlg::IsIPValid(CString szResource)
{
    int maxwait = 0;
    bool retVal = true; MSG winmsg;
    PMIB_IPFORWARDROW pBestRoute;
    DWORD ExitCode;

    CMessages *msgs;
    msgs = new CMessages;
    msgs->Create(IDD_MESSAGE);
    msgs->m_appMsgs=("Pinging network resource...");
    msgs->UpdateData(FALSE);
    msgs->CenterWindow();
    msgs->ShowWindow(SW_SHOW);

    CString temp = "ping ";
    szResource = temp + szResource;

    while ( maxwait < 5 )
    {
        // Check to see if we can ping szResource (i.e, some server)
        STARTUPINFO si;
        PROCESS_INFORMATION pi;
        ZeroMemory( &si, sizeof(si) );
        si.cb = sizeof(si);
        ZeroMemory( &pi, sizeof(pi) );
        si.dwFlags = STARTF_USESHOWWINDOW;
        si.wShowWindow = SW_SHOW;
        msgs->UpdateWindow();

        // Start the child process.
        if( !CreateProcess( NULL, // No module name (use command line).
            (char*)(LPCTSTR)szResource, // Command line.
            NULL, // Process handle not inheritable.
            NULL, // Thread handle not inheritable.
            FALSE, // Set handle inheritance to FALSE.
            0, // No creation flags.
            NULL, // Use parent's environment block.
            NULL, // Use parent's starting directory.
            &si, // Pointer to STARTUPINFO structure.
            &pi ) // Pointer to PROCESS_INFORMATION structure.
        )
        {
            MessageBox( "IsIPValid: CreateProcess failed");
            temp.Format("%d",GetLastError());
            MessageBox("Error: " + temp);
            return false;
        }

        // Wait until process exits.
        WaitForSingleObject( pi.hProcess, INFINITE);
        GetExitCodeProcess(pi.hProcess, &ExitCode);
        szResource.Format("%d",ExitCode);

        // Close process and thread handles.
        CloseHandle( pi.hProcess );
        CloseHandle( pi.hThread );
        if ( ExitCode == 0 )
        {
            retVal = true;
            break;
        }
        Sleep(3000);
        maxwait++;
    } // end while
    msgs->DestroyWindow();

    if (maxwait > 4) retVal = false;

    return retVal;

}