waveInGetDevCaps
The waveInGetDevCaps function retrieves the capabilities of a given waveform-audio input device.
MMRESULT waveInGetDevCaps(
UINT_PTR 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 Values
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following.
| Value | 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
** Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
** Windows 95/98/Me:** Included in Windows 95 and later.
** Header:** Declared in Mmsystem.h; include Windows.h.
** Library:** Use Winmm.lib.
** Unicode:** Implemented as Unicode and ANSI versions on Windows NT/2000/XP.
See Also