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acmStreamConvertCallback
The acmStreamConvertCallback function specifies an application-provided callback function to be used when
the acmStreamOpen function specifies the CALLBACK_FUNCTION flag. The acmStreamConvertCallback name is a placeholder for an application-defined function name.
- oid CALLBACK acmStreamConvertCallback(
HACMSTREAM has,
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| UINT uMsg,
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| DWORD dwInstance,
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| LPARAM lParam1,
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| LPARAM lParam2
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| );
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|
Parameters
has
Handle of the ACM conversion stream associated with the callback function.
uMsg
ACM conversion stream message. The following values are defined:
MM_ACM_CLOSE
ACM has successfully closed the conversion stream identified by has. The handle specified by has is no longer valid after receiving this message.
MM_ACM_DONE
ACM has successfully converted the buffer identified by lParam1 (which is a pointer to the ACMSTREAMHEADER structure) for the stream handle identified by has.
MM_ACM_OPEN
ACM has successfully opened the conversion stream identified by has.
dwInstance
User-instance data given as the dwInstance parameter of the acmStreamOpen function.
lParam1 and lParam2
Message parameters.
Return Values
This function does not return a value.
Remarks
The following functions should not be called from within the callback
function: acmDriverAdd, acmDriverRemove, and acmDriverPriority.
See Also
acmStreamOpen, ACMSTREAMHEADER, acmDriverAdd, acmDriverRemove, acmDriverPriority
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