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WPDM_OPEN (Compact 2013)

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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

See Also

Reference

WPDM Messages
PDD_WaveProc

Other Resources

WAVEFORMATEX (Waveform Audio)