[求助] 块分解的问题

gxrily · 发表于 2007-9-17 14:36:00

pBlf=AcDbBlockReference::cast(pEnt);
      AcDbVoidPtrArray bentyset;
   pBlf->explode(bentyset);
  AcDbEntity *pblent=NULL;
for (int blent=0;blent[b]
{
pblent=(AcDbEntity*)bentyset.at(blent);
if (pblent->isA()==AcDb2dPolyline::desc())
         {
               p2dpoly=AcDb2dPolyline::cast(pblent);
               AcDbObjectIterator *pVertIter =p2dpoly->vertexIterator();
            AcDb2dVertex *pVertex;
            AcGePoint3d  location;
            AcDbObjectId  vertexObjId;
            for(int vertexNumber=0;!pVertIter->done();vertexNumber++,pVertIter->step())
                        {
                           AfxMessageBox("9");
                           vertexObjId=pVertIter->objectId();
// vertexObjId 不知为何是knull
                           if (vertexObjId!=AcDbObjectId::kNull)
                           {
                                 AfxMessageBox("qq");
                                 Acad::ErrorStatus es;
                                 es=acdbOpenObject(pVertex,vertexObjId,AcDb::kForRead);
                                 acutPrintf("%d",es);
                           }

                           location=pVertex->position() ;
                           pointlist.append(location);
                           pVertex->close();*/
                        }

                  }
                  p2dpoly->close();
               }

         }
得到的vertexObjId 总为knull，请问程序有什么问题，为什么打不开对象