static void swtArxProject5plcopy(void)    {        // Add your code for command swtArxProject5.plcopy here        //定义对象名和点        ads_name ename;ads_point pt;        //如果没有选择到实体        if(acedEntSel(NULL,ename,pt)!=RTNORM)        {            return;        }        //定义并获取ID        AcDbObjectId id;        acdbGetObjectId(id,ename);        //定义并获取实体        AcDbEntity *pEnt;        acdbOpenObject(pEnt,id,AcDb::kForRead);        //定义点集        AcGePoint2dArray pts;        //判断是否是多段线        if(pEnt->isKindOf(AcDbPolyline::desc()))        {            //如果是，定义多段线            AcDbPolyline *pPline=AcDbPolyline::cast(pEnt);            //点数量            int num=pPline->numVerts();            //在点中循环            for (int i=0;i<num;i++)            {                AcGePoint2d pt;                //取得每个点                pPline->getPointAt(i,pt);                //将点加入到点集                pts.append(pt);            }             pPline->close();        }        //关闭实体        pEnt->close();        //创建多段线        CreatePolyline(pts,1.0);    }

AcDbObjectId CreatePolyline(AcGePoint2dArray pts,double width){	int numVertex =pts.length();	AcDbPolyline *pPoly=new AcDbPolyline(numVertex);	for (int i=0;i<numVertex;i++)	{		pPoly->addVertexAt(i,pts.at(i),0,width,width);	}	AcDbObjectId polyId;	pPoly->setColorIndex(1);	polyId=PostToModelSpace(pPoly);	pPoly->close();	return polyId;}