Microsoft DirectX 9.0


The SetConeAngles method sets the inside and outside angles of the sound projection cone.


HRESULT SetConeAngles(
  DWORD dwInsideConeAngle, 
  DWORD dwOutsideConeAngle, 
  DWORD dwApply 



Inside cone angle, in degrees. This is the angle within which the sound is at its normal volume.


Outside cone angle, in degrees. This is the angle outside of which the sound is at its outside volume.


Value that indicates when the setting should be applied. Must be one of the following:

Value Description
DS3D_DEFERRED Settings are not applied until the application calls the IDirectSound3DListener8::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.


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.


  Header: Declared in dsound.h.

See Also