大家能不能帮忙看看这个程序有什么问题？都好多天了还没有解决

黄玮

分别用extrude与extrudeAlongPath拉生得到圆柱：
AcDbBlockTable *pThisBlockTable;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pThisBlockTable,AcDb::kForWrite);
AcDbBlockTableRecord *pOtherBtr;
pThisBlockTable->getAt(ACDB_MODEL_SPACE,pOtherBtr,AcDb::kForWrite);
pThisBlockTable->close();

AcDbCircle *OCircle = new AcDbCircle(AcGePoint3(0,0,0),AcGeVector3d(1,0,0),80);
AcDbLine *line = new AcDbLine(AcGePoint3d(0,0,0),AcGePoint3d(100,0,0));
AcDb3dSolid *OSolid = new AcDb3dSolid();
AcDbObjectId OSolidId;

AcDbVoidPtrArray OArr,OgnArr;
OArr.append(OCircle);
OCircle->close();
int i;
if (AcDbRegion::createFromCurves(OArr,OgnArr)!=Acad::eOk)
{
for (i=0;i delete OgnArr;
return;
}
AcDbRegion *oRegion;
oRegion=AcDbRegion::cast((AcRxObject*)OgnArr[0]);

//OSolid->extrudeAlongPath(oRegion,line);
OSolid->extrude(oRegion,100,0);
pOtherBtr->appendAcDbEntity(OSolidId,OSolid);

line->close();
OSolid->close();
pOtherBtr->close();


为什么我用extrude可以得到圆柱，而extrudeAlongPath却会出错？先谢过各位了。