User's Guide > Element Trees: Datum Features > Datum Point Features > Placement Constraint References
Placement Constraint References
Valid values for the PRO_E_DPOINT_PLA_CONSTR_REF placement reference are as follows:
Curve—SEL_3D_CURVE, SEL_3D_CABLE, SEL_IGES_WF
Edge—SEL_3D_EDG
Axis—SEL_3D_AXIS
Vertex—SEL_3D_VERT or SEL_CURVE_END
CSYS—SEL_3D_CSYS
Surface—SEL_3D_SRF, SEL_3D_SRF_LIST
Datum Pnt—SEL_3D_PNT
這是否有幫助?