waveOutGetDevCaps
The waveOutGetDevCaps
function retrieves the capabilities of a given waveform-audio output device.
MMRESULT waveOutGetDevCaps(
|
UINT uDeviceID, |
|
|
LPWAVEOUTCAPS pwoc, |
|
|
UINT cbwoc |
|
|
); |
|
Parameters
uDeviceID
Identifier of
the waveform-audio output device. It can be either a device identifier or a
handle of an open waveform-audio output device.
pwoc
Address of a WAVEOUTCAPS structure to be filled
with information about the capabilities of the device.
cbwoc
Size, in
bytes, of the WAVEOUTCAPS structure.
Return Values
Returns
MMSYSERR_NOERROR if successful or an error otherwise. Possible error values
include the following:
|
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 the waveOutGetNumDevs
function to determine the number of waveform-audio output 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
cbwoc bytes (or less) of information is copied to the location pointed
to by pwoc. If cbwoc is zero, nothing is copied and the function
returns zero.
See Also