WPDM_GETDEVCAPS (Compact 2013)
3/26/2014
This message is passed to the PDD_WaveProc function to instruct the audio PDD to query the hardware to determine its capabilities.
Parameters
apidir
Input and output; one of the following values.Value
Description
WAPI_IN
Obtain input capabilities.
WAPI_OUT
Obtain output capabilities.
- dwParam1
Pointer to a WAVEINCAPS or WAVEOUTCAPS structure that holds information about capabilities. If this parameter is NULL, the PDD returns immediately, indicating whether the driver supports the specified direction of data transfer. For example, if apidir is WAPI_IN, and input is not supported, this function returns MMSYSERR_NOTSUPPORTED.
- dwParam2
Specifies the size, in bytes, of WAVEINCAPS or WAVEOUTCAPS.
Requirements
Header |
waveddsi.h |