The definition of the internal DirectX D3DLIGHT7 object is as follows:

struct D3DLIGHT7 {
D3DLIGHTTYPE dltType;
D3DCOLORVALUE dcvDiffuse;
D3DCOLORVALUE dcvSpecular;
D3DCOLORVALUE dcvAmbient;
D3DVECTOR dvPosition;
D3DVECTOR dvDirection;
D3DVALUE dvRange;
D3DVALUE dvFalloff;
D3DVALUE dvAttenuation0;
D3DVALUE dvAttenuation1;
D3DVALUE dvAttenuation2;
D3DVALUE dvTheta;
D3DVALUE dvPhi;
};