The IDirect3DLight::SetLight method sets the light information for the Direct3DLight object.
HRESULT SetLight(
LPD3DLIGHT lpLight
);
If the method succeeds, the return value is D3D_OK.
If the method fails, the return value may be one of the following values:
DDERR_INVALIDOBJECT
DDERR_INVALIDPARAMS
Windows NT: Use version 4.0 or later.
Windows: Use Windows 95 or later. Available as a redistributable for Windows 95.
Windows CE: Unsupported.
Header: Declared in ddraw.h.
Import Library: Use ddraw.lib.