Using Win32 functions in Visual FoxPro Image Gallery
Windows Multimedia
..msdn
AVIFileExit
AVIFileGetStream
AVIFileInfo
AVIFileInit
AVIFileOpen
AVIFileRelease
AVIFileWriteData
AVIStreamGetFrame
AVIStreamGetFrameClose
AVIStreamGetFrameOpen
AVIStreamInfo
AVIStreamLength
AVIStreamReadFormat
AVIStreamRelease
AVIStreamStart
AVIStreamTimeToSample
capCreateCaptureWindow
capGetDriverDescription
DrawDibClose
DrawDibDraw
DrawDibOpen
mciGetDeviceID
mciGetErrorString
mciSendCommand
mciSendString
midiOutClose
midiOutGetDevCaps
midiOutGetNumDevs
midiOutOpen
midiOutReset
midiOutShortMsg
mixerClose
mixerGetControlDetails
mixerGetDevCaps
mixerGetID
mixerGetLineControls
mixerGetLineInfo
mixerGetNumDevs
mixerOpen
mixerSetControlDetails
mmioAscend
mmioClose
mmioCreateChunk
mmioDescend
mmioFlush
mmioOpen
mmioRead
mmioSeek
mmioWrite
PlaySound
sndPlaySound
timeGetDevCaps
waveInAddBuffer
waveInClose
waveInGetDevCaps
waveInGetErrorText
waveInGetNumDevs
waveInGetPosition
waveInOpen
waveInPrepareHeader
waveInReset
waveInStart
waveInStop
waveInUnprepareHeader
waveOutClose
waveOutGetDevCaps
waveOutGetErrorText
waveOutGetNumDevs
waveOutGetPosition
waveOutGetVolume
waveOutOpen
waveOutPrepareHeader
waveOutReset
waveOutSetVolume
waveOutUnprepareHeader
waveOutWrite
Code examples:
Playing WAV sounds simultaneously
WAV file player
waveOutOpen
..msdn    Add comment     W32 Constants      Translate this page
The waveOutOpen function opens the given waveform-audio output device for playback.
Code examples:
WAV file player
Playing WAV sounds simultaneously
Declaration:
MMRESULT waveOutOpen(
  LPHWAVEOUT     phwo,      
  UINT_PTR       uDeviceID, 
  LPWAVEFORMATEX pwfx,      
  DWORD_PTR      dwCallback,
  DWORD_PTR      dwCallbackInstance,
  DWORD          fdwOpen    
);
FoxPro declaration:
DECLARE INTEGER waveOutOpen IN winmm;
    INTEGER @ phwo,;
    INTEGER   uDeviceID,;
    STRING  @ pwfx,;
    INTEGER   dwCallback,;
    INTEGER   dwCallbackInst,;
    INTEGER   fdwOpen

Parameters:
phwo
Pointer to a buffer that receives a handle identifying the open waveform-audio output device.

uDeviceID
Identifier of the waveform-audio output device to open.

pwfx
Pointer to a WAVEFORMATEX structure that identifies the format of the waveform-audio data to be sent to the device.

dwCallback
Pointer to a fixed callback function, an event handle, a handle to a window, or the identifier of a thread to be called during waveform-audio playback to process messages related to the progress of the playback.

dwCallbackInstance
User-instance data passed to the callback mechanism. This parameter is not used with the window callback mechanism.

fdwOpen
Flags for opening the device. The following values are defined.
Return value:
Returns MMSYSERR_NOERROR (0) if successful or an error otherwise.
My comment:
Use the waveOutGetNumDevs function to determine the number of waveform-audio output devices present in the system. If the value specified by the uDeviceID parameter is a device identifier, it can vary from zero to one less than the number of devices present.

The WAVE_MAPPER constant can also be used as a device identifier.

If you choose to have a function receive callback information, the following messages are sent to the function to indicate the progress of waveform-audio output: WOM_OPEN, WOM_CLOSE, and WOM_DONE.
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Created: 2003-07-23 08:02:33
Modified: 2003-07-23 08:06:22
Visited in last 7 days: 32
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