IKsPropertySet::Get Method

發行項
09/10/2011

[The feature associated with this page, DirectSound, is a legacy feature. It has been superseded by WASAPI and Audio Graphs. Media Casting have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Media Casting instead of DirectSound, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The Get method retrieves data for an item in a property set.

Syntax

HRESULT Get(
         REFGUID rguidPropSet,
         ULONG ulId,
         LPVOID pInstanceData,
         ULONG ulInstanceLength,
         LPVOID pPropertyData,
         ULONG ulDataLength,
         PULONG pulBytesReturned
)

Parameters

rguidPropSet
Reference to (C++) or address of (C) a GUID representing the property set to be accessed.
ulId
Item within the property set to be accessed. Items are indexed from 0 and are always the same for a given property set GUID.
pInstanceData
Instance data for the get call.
ulInstanceLength
Number of bytes pointed to by pInstanceData.
pPropertyData
Data to set for this item.
ulDataLength
Number of bytes pointed to by pPropertyData
pulBytesReturned
Address of a variable that receives the number of bytes written into pPropertyData.

Return Value

Return values are determined by the designer of the property set.

If the method succeeds, the return value may be S_OK.

If it fails, the method may return one E_POINTER.

Remarks

The format of the data in both pInstanceData and pPropertyData is item-specific.

Requirements

Header: Declared in DSound.h.

Library: Use Dsound3d.dll.

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