auxGetDevCaps function

The auxGetDevCaps function retrieves the capabilities of a given auxiliary output device.

Syntax

MMRESULT auxGetDevCaps(
   UINT_PTR  uDeviceID,
   LPAUXCAPS lpCaps,
   UINT      cbCaps
);

Parameters

• uDeviceID
  Identifier of the auxiliary output device to be queried. Specify a valid device identifier (see the following comments section), or use the following constant:

  Value	Meaning
  AUX_MAPPER	Auxiliary audio mapper. The function returns an error if no auxiliary audio mapper is installed.

   

• lpCaps
  Pointer to an AUXCAPS structure to be filled with information about the capabilities of the device.

• cbCaps
  Size, in bytes, of the AUXCAPS structure.

Return value

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

Remarks

The device identifier in uDeviceID varies from zero to one less than the number of devices present. AUX_MAPPER may also be used. Use the auxGetNumDevs function to determine the number of auxiliary output devices present in the system.

Requirements

See also

Waveform Audio

Waveform Functions