waveInGetDevCaps function (mmeapi.h)

The waveInGetDevCaps function retrieves the capabilities of a given waveform-audio input device.

Syntax

MMRESULT waveInGetDevCaps(
  UINT         uDeviceID,
  LPWAVEINCAPS pwic,
  UINT         cbwic
);

Parameters

uDeviceID

Identifier of the waveform-audio output device. It can be either a device identifier or a handle of an open waveform-audio input device.

pwic

Pointer to a WAVEINCAPS structure to be filled with information about the capabilities of the device.

cbwic

Size, in bytes, of the WAVEINCAPS 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.
MMSYSERR_NODRIVER	No device driver is present.
MMSYSERR_NOMEM	Unable to allocate or lock memory.

Remarks

Use this function to determine the number of waveform-audio input devices present in the system. If the value specified by the uDeviceID parameter is a device identifier, it can vary from zero to one less than the number of devices present. The WAVE_MAPPER constant can also be used as a device identifier. Only cbwic bytes (or less) of information is copied to the location pointed to by pwic. If cbwic is zero, nothing is copied and the function returns zero.

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