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mixerGetDevCaps (Compact 2013)

  • Article

3/26/2014

This function queries a specified mixer device to determine its capabilities.

Syntax

MMRESULT mixerGetDevCaps(
  UINT uMxId, 
  LPMIXERCAPS pmxcaps, 
  UINT cbmxcaps 
);

Parameters

  • uMxId
    Identifier or handle of an open mixer device.
  • pmxcaps
    Pointer to a MIXERCAPS structure that receives information about the capabilities of the device.
  • cbmxcaps
    Size, in bytes, of the MIXERCAPS structure.

Return Value

Returns MMSYSERR_NOERROR if successful or an error otherwise.

The following table shows the possible error values.

Value

Description

MMSYSERR_BADDEVICEID

The specified device identifier is out of range.

MMSYSERR_INVALHANDLE

The mixer device handle is invalid.

MMSYSERR_INVALPARAM

One or more parameters are invalid.

Remarks

Use the mixerGetNumDevs function to determine the number of mixer devices present in the system. The device identifier specified by uMxId varies from zero to one less than the number of mixer devices present.

Only the number of bytes (or less) of information specified in cbmxcaps is copied to the location pointed to by pmxcaps.

If cbmxcaps is zero, nothing is copied, and the function returns successfully.

This function also accepts a mixer device handle returned by the mixerOpen function as the uMxId parameter.

The application should cast the HMIXER handle to a UINT.

Requirements

Header

mmsystem.h

Library

coredll.lib

See Also

Reference

Hardware Audio Mixer Functions
mixerGetNumDevs
mixerOpen