HRESULT GetPosition(LPDIRECT3DRMFRAME lpRef, LPD3DVECTOR lprvPos);
Retrieves the position of a frame relative to the given reference frame (for example, this method retrieves the distance of the frame from the reference). The distance is stored in the lprvPos parameter as a vector rather than as a linear measure.
·Returns D3DRM_OK if successful, or an error otherwise. For a list of possible return codes, see Direct3D Retained-Mode Return Values.
lpRef
Address of a variable that represents the Direct3DRMFrame object to be used as the reference.
lprvPos
Address of a D3DVECTOR structure that will be filled with the frame's position.