HRESULT SetFront(D3DVALUE rvFront);
Sets the position of the front clipping plane for a viewport.
·Returns D3DRM_OK if successful, or an error otherwise. For a list of possible return codes, see Direct3D Retained-Mode Return Values.
rvFront
New position of the front clipping plane.
The default position is 1.0. If the value passed is less than or equal to zero, this method returns the D3DRMERR_BADVALUE error.