WPDM_OPEN

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

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.

Remarks

This message is declared in the Waveddsi.h header file.

See Also

PDD_WaveProc