AUXCAPS

The AUXCAPS structure describes the capabilities of an auxiliary output device.

typedef struct {

WORD wMid;

WORD wPid;

MMVERSION vDriverVersion;

CHAR szPname[MAXPNAMELEN];

WORD wTechnology;

WORD wReserved1;

DWORD dwSupport;

} AUXCAPS;

Members

wMid

Manufacturer identifier for the device driver for the auxiliary audio device. Manufacturer identifiers are defined in Manufacturer and Product Identifiers.

wPid

Product identifier for the auxiliary audio device. Currently, no product identifiers are defined for auxiliary audio devices.

  • DriverVersion

Version number of the device driver for the auxiliary audio device. The high-order byte is the major version number, and the low-order byte is the minor version number.

szPname

Product name in a null-terminated string.

wTechnology

Type of the auxiliary audio output:

AUXCAPS_AUXIN

Audio output from auxiliary input jacks.

AUXCAPS_CDAUDIO

Audio output from an internal CD-ROM drive.

wReserved1

Padding.

dwSupport

Describes optional functionality supported by the auxiliary audio device.

AUXCAPS_LRVOLUME

Supports separate left and right volume control.

AUXCAPS_VOLUME

Supports volume control.

If a device supports volume changes, the AUXCAPS_VOLUME flag will be set. If a device supports separate volume changes on the left and right channels, both AUXCAPS_VOLUME and the AUXCAPS_LRVOLUME will be set.

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