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acmDriverID

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The acmDriverID function returns the handle of an ACM driver identifier associated with an open ACM driver instance or stream handle.

MMRESULT acmDriverID(
  HACMOBJ hao,            
  LPHACMDRIVERID phadid,  
  DWORD fdwDriverID       
);

Parameters

hao

Handle to the open driver instance or stream handle. This is the handle of an ACM object, such HACMDRIVER or HACMSTREAM.

phadid

Pointer to a buffer that receives a handle identifying the installed driver that is associated with hao.

fdwDriverID

Reserved; must be zero.

Return Values

Returns zero if successful or an error otherwise. Possible error values include the following.

Value Description
MMSYSERR_INVALFLAG At least one flag is invalid.
MMSYSERR_INVALHANDLE The specified handle is invalid.
MMSYSERR_INVALPARAM At least one parameter is invalid.

Requirements

**  Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
**  Windows 95/98/Me:** Included in Windows 95 and later.
**  Header:** Declared in Msacm.h.
**  Library:** Use Msacm32.lib.

See Also

Audio Compression Manager, Audio Compression Functions