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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 |
|---|---|
|
Specified device identifier is out of range. |
|
No device driver is present. |
|
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 |