auxMessage

DWORD auxMessage(uDevice, uMsg, dwUser, dwParam1, dwParam2)

This function is the entry point for an auxiliary audio device driver.

• Unless specified otherwise under a specific message, the driver should return an MMSYSERR_ or AUXERR_ error code.

UINT uDevice

Specifies the ID of the target device. Device IDs are sequential, starting at zero and ending at a value equal to one less than the number of devices the driver supports.

UINT uMsg

Specifies the message being sent to the driver.

DWORD dwUser

Not used.

DWORD dwParam1

Specifies a message-dependent parameter.

DWORD dwParam2

Specifies a message-dependent parameter.

The driver should return MMSYSERR_NOTSUPPORTED if it does not support the specified message.