IDirectSound3DBuffer8::SetConeOrientation Method

项目
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 It has been superseded by WASAPI and Audio Graphs.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 SetConeOrientation method sets the orientation of the sound projection cone.

Syntax

HRESULT SetConeOrientation(
         D3DVALUE x,
         D3DVALUE y,
         D3DVALUE z,
         DWORD dwApply
)

Parameters

x
Value that specifies the x coordinate of the sound cone orientation vector. D3DVALUE is defined as float.
y
Value that specifies the y coordinate of the sound cone orientation vector. D3DVALUE is defined as float.
z
Value that specifies the z coordinate of the sound cone orientation vector. D3DVALUE is defined as float.

dwApply
Value that specifies when the setting should be applied. This value must be one of the following:

Value	Description
DS3D_DEFERRED	Settings are not applied until the application calls the CommitDeferredSettings method. This allows the application to change several settings and generate a single recalculation.
DS3D_IMMEDIATE	Settings are applied immediately, causing the system to recalculate the 3D coordinates for all 3D sound buffers.

Return Value

If the method succeeds, the return value is DS_OK. If the method fails, the return value may be DSERR_INVALIDPARAM.

Remarks

This method has no effect unless the cone angle and cone outside volume have also been set to values other than the default.

Requirements

Header: Declared in DSound.h.

Library: Use Dsound3d.dll.

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