acmDriverOpen function

The acmDriverOpen function opens the specified ACM driver and returns a driver instance handle that can be used to communicate with the driver.

Syntax


MMRESULT acmDriverOpen(
   LPHACMDRIVER phad,
   HACMDRIVERID hadid,
   DWORD        fdwOpen
);

Parameters

phad

Pointer to a buffer that receives the new driver instance handle that can be used to communicate with the driver.

hadid

Handle to the driver identifier of an installed and enabled ACM driver.

fdwOpen

Reserved; must be zero.

Return value

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

Return codeDescription
MMSYSERR_INVALFLAG

At least one flag is invalid.

MMSYSERR_INVALHANDLE

The specified handle is invalid.

MMSYSERR_INVALPARAM

At least one parameter is invalid.

MMSYSERR_NOMEM

The system is unable to allocate resources.

MMSYSERR_NOTENABLED

The driver is not enabled.

 

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Msacm.h

Library

Msacm32.lib

DLL

Msacm32.dll

See also

Audio Compression Manager
Audio Compression Functions

 

 

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