HRESULT LookAt(LPDIRECT3DRMFRAME lpTarget, LPDIRECT3DRMFRAME lpRef,
D3DRMFRAMECONSTRAINT rfcConstraint);
Faces the frame toward the target frame, relative to the given reference frame, locking the rotation by the given constraints.
·Returns D3DRM_OK if successful, or an error otherwise. For a list of possible return codes, see Direct3D Retained-Mode Return Values.
lpTarget and lpRef
Addresses of variables that represent the Direct3DRMFrame objects to be used as the target and reference, respectively.
rfcConstraint
Member of the D3DRMFRAMECONSTRAINT enumerated type that specifies the axis of rotation to constrain.