IDirectSound3DBuffer::SetConeAngles
The IDirectSound3DBuffer::SetConeAngles method sets the inside and outside angles of the sound projection cone for this sound buffer.
HRESULT SetConeAngles(
DWORD dwInsideConeAngle,
DWORD dwOutsideConeAngle,
DWORD dwApply
);
Parameters
dwInsideConeAngle and dwOutsideConeAngle
Inside and outside angles of the sound projection cone, in degrees.
dwApply
Value indicating when the setting should be applied. This value must be one of the following:
| DS3D_DEFERRED | Settings are not applied until the application calls the IDirectSound3DListener::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 3-D coordinates for all 3-D sound buffers. |
Return Values
If the method succeeds, the return value is DS_OK.
If the method fails, the return value may be DSERR_INVALIDPARAM.
Remarks
The minimum, maximum, and default cone angles are defined in Dsound.h as DS3D_MINCONEANGLE, DS3D_MAXCONEANGLE, and DS3D_DEFAULTCONEANGLE. Each angle must be in the range of 0 degrees (no cone) to 360 degrees (the full sphere). The default value is 360.
See Also
IIDirectSound3DBuffer::GetConeOutsideVolume, IDirectSound3DBuffer::SetConeOutsideVolume