C / C++ / MFC

DWORD CWave::recordWAVEFile(DWORD dwMilliSeconds) <br />
{ <br />
    UINT wDeviceID; <br />
    DWORD dwReturn; <br />
    MCI_OPEN_PARMS mciOpenParms; <br />
    MCI_RECORD_PARMS mciRecordParms; <br />
    MCI_SAVE_PARMS mciSaveParms; <br />
    MCI_PLAY_PARMS mciPlayParms; <br />
   <br />
    // Open a waveform-audio device with a new file for recording. <br />
    mciOpenParms.lpstrDeviceType = "waveaudio"; <br />
    mciOpenParms.lpstrElementName = ""; <br />
    if (dwReturn = mciSendCommand(0, MCI_OPEN, <br />
        MCI_OPEN_ELEMENT | MCI_OPEN_TYPE, <br />
        (DWORD)(LPVOID) &mciOpenParms)) <br />
    { <br />
        // Failed to open device; don't close it, just return error. <br />
        return (dwReturn); <br />
    } <br />
<br />
    // The device opened successfully; get the device ID. <br />
    wDeviceID = mciOpenParms.wDeviceID; <br />
<br />
    // Begin recording and record for the specified number of <br />
    // milliseconds. Wait for recording to complete before continuing. <br />
    // Assume the default time format for the waveform-audio device <br />
    // (milliseconds). <br />
    mciRecordParms.dwTo = dwMilliSeconds; <br />
    if (dwReturn = mciSendCommand(wDeviceID, MCI_RECORD, <br />
        MCI_TO | MCI_WAIT, (DWORD)(LPVOID) &mciRecordParms)) <br />
    { <br />
        mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL); <br />
        return (dwReturn); <br />
    } <br />
<br />
  // Play the recording and query user to save the file. <br />
   /* mciPlayParms.dwFrom = 0L; <br />
    if (dwReturn = mciSendCommand(wDeviceID, MCI_PLAY, <br />
        MCI_FROM | MCI_WAIT, (DWORD)(LPVOID) &mciPlayParms)) <br />
    { <br />
        mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL); <br />
        return (dwReturn); <br />
    } */<br />
    if (MessageBox(hMainWnd, "Do you want to save this recording?", <br />
        "", MB_YESNO) == IDNO) <br />
    { <br />
        mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL); <br />
        return (0L); <br />
    } <br />
<br />
    // Save the recording to a file named TEMPFILE.WAV. Wait for <br />
    // the operation to complete before continuing. <br />
    mciSaveParms.lpfilename = "c:\\file.wav"; <br />
    if (dwReturn = mciSendCommand(wDeviceID, MCI_SAVE, <br />
        MCI_SAVE_FILE | MCI_WAIT, (DWORD)(LPVOID) &mciSaveParms)) <br />
    { <br />
        mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL); <br />
        return (dwReturn); <br />
    } <br />
    return (0L); <br />
}