_getHandleCount _getHandlePoint _getHandleType _hitTestBox _isHandleFixed _load _output _points _save _setHandlePoint _subtype angle center endPoint getPoints getSubType isBeeline isRayline length setBeeline setEndPoint setRayline setStartPoint startPoint

_setHandlePoint() bool MgLine::_setHandlePoint ( int  index, const Point2d &  pt, float  tol  ) protected 这是这个函数的调用关系图: