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:
Class for sound recording
Quering a waveform-audio input device
waveInOpen
..msdn    Add comment     W32 Constants      Translate this page
The waveInOpen function opens the given waveform-audio input device for recording.
Code examples:
Class for sound recording
Quering a waveform-audio input device
Declaration:
MMRESULT waveInOpen(
  LPHWAVEIN       phwi,      
  UINT_PTR       uDeviceID,  
  LPWAVEFORMATEX pwfx,       
  DWORD_PTR      dwCallback, 
  DWORD_PTR      dwCallbackInstance, 
  DWORD          fdwOpen     
);
FoxPro declaration:
DECLARE INTEGER waveInOpen IN winmm;
    INTEGER @ phwi,;
    INTEGER   uDeviceID,;
    STRING  @ pwfx,;
    INTEGER   dwCallback,;
    INTEGER   dwCallbackInstance,;
    LONG      fdwOpen

Parameters:
phwi
Pointer to a buffer that receives a handle identifying the open waveform-audio input device.
uDeviceID
Identifier of the waveform-audio input device to open.

pwfx
Pointer to a WAVEFORMATEX structure that identifies the desired format for recording waveform-audio data.

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 recording to process messages related to the progress of recording.

dwCallbackInstance
User-instance data passed to the callback mechanism.

fdwOpen
Flags for opening the device.
Return value:
Returns MMSYSERR_NOERROR (0) if successful or an error otherwise.
My comment:
Use the waveInGetNumDevs function to determine the number of waveform-audio input devices present on the system.

The device identifier specified by uDeviceID varies from zero to one less than the number of devices present. The WAVE_MAPPER constant can also be used as a device identifier.
Word Index links for the waveInOpen :
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Created: 2003-01-11 14:00:29
Modified: 2003-01-11 14:05:42
Visited in last 7 days: 27
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