waveInProc
The
waveInProc function is the callback function used with the waveform-audio input device.
This function is a placeholder for the application-defined function name. The
address of this function can be specified in the callback-address parameter of
the
waveInOpen function.
HWAVEIN hwi,
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UINT uMsg,
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DWORD dwInstance,
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DWORD dwParam1,
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DWORD dwParam2
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);
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Parameters
hwi
Handle of the waveform-audio device associated with the callback function.
uMsg
Waveform-audio input message. It can be one of the following messages:
WIM_CLOSE
Sent when the device is closed using the
waveInClose function.
WIM_DATA
Sent when the device driver is finished with a data block sent using the
waveInAddBuffer function.
WIM_OPEN
Sent when the device is opened using the
waveInOpen function.
dwInstance
User instance data specified with
waveInOpen.
dwParam1
Message parameters.
dwParam2
Message parameters.
Return Values
This function does not return a value.
Remarks
Applications should not call any system-defined functions from inside a
callback function, except for
EnterCriticalSection,
LeaveCriticalSection,
midiOutLongMsg,
midiOutShortMsg,
OutputDebugString,
PostMessage,
PostThreadMessage,
SetEvent,
timeGetSystemTime,
timeGetTime,
timeKillEvent, and
timeSetEvent. Calling other wave functions will cause deadlock.
See Also
EnterCriticalSection,
LeaveCriticalSection,
midiOutLongMsg,
midiOutShortMsg,
OutputDebugString,
PostMessage,
PostThreadMessage,
SetEvent,
timeGetSystemTime,
timeGetTime,
timeKillEvent,
timeSetEvent,
waveInAddBuffer,
waveInClose,
waveInOpen,
WIM_DATA,
WIM_CLOSE,
WIM_OPEN
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