WPDM_OPEN (Compact 2013)
3/26/2014
This message is passed to the PDD_WaveProc function to instruct the audio PDD to indicate that the waveform device will be sent data of the specified format.
Parameters
apidir
Input and output; one of the following values.Value
Description
WAPI_IN
Opens input path.
WAPI_OUT
Opens output path.
- dwParam1
Pointer to a WAVEFORMATEX structure that points to the format of the data to be played.
- dwParam2
BOOL. TRUE indicates that the driver needs to check only if the specified format is supported. If the format is not supported, the driver returns WAVEERR_BADFORMAT. FALSE indicates that this WPDM_OPEN message is a genuine open request.
Requirements
Header |
waveddsi.h |