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auxGetDevCaps function (mmeapi.h)

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

Syntax

MMRESULT auxGetDevCaps(
  UINT      uDeviceID,
  LPAUXCAPS pac,
  UINT      cbac
);

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.

pac

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

cbac

Size, in bytes, of the AUXCAPS structure.

Return value

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

Return code Description
MMSYSERR_BADDEVICEID
 Specified device identifier is out of range.

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

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header mmeapi.h (include Windows.h)
Library Winmm.lib
DLL Winmm.dll

See also

Waveform Audio

Waveform Functions