objectarx 把当前图形输出

方法1： 

AcDbDatabase *pdb;
 acdbCurDwg()->wblock(pdb);
 pdb->saveAs(str);
 pdb->closeInput(true);
 delete pdb;

方法2：

AcDbDatabase * pDB=acdbHostApplicationServices()->workingDatabase();
 AcDbBlockTable *pBT1;
 pDB->getBlockTable(pBT1,AcDb::kForRead);

 AcDbBlockTableRecord *pBTR1;
 pBT1->getAt(ACDB_MODEL_SPACE,pBTR1,AcDb::kForRead);
 AcDbBlockTableRecordIterator * pBTRIt;
 AcDbObjectIdArray objArr;
 AcDbIdMapping idMap;

 pBTR1->newIterator(pBTRIt);
 pBTRIt->start();

 for (;!pBTRIt->done();pBTRIt->step())
 {
  AcDbObjectId objID;
  pBTRIt->getEntityId(objID);
  objArr.append(objID);  
 }
 delete pBTRIt;
 pBTR1->close();
 pBT1->close();
 AcDbDatabase* pTempDb=new AcDbDatabase();
 idMap.setDestDb(pTempDb);
 pTempDb->getSymbolTable(pBT1,AcDb::kForRead);
 Acad::ErrorStatus e;
 AcDbBlockTableRecord * pBTR2;
 AcDbObjectId pSpaceObjID;
 pBT1->getAt(ACDB_MODEL_SPACE,pSpaceObjID);
 pBT1->close();
 // pSpaceObjID=getBlockId(ACDB_PAPER_SPACE);

 e=pTempDb->wblockCloneObjects(objArr,pSpaceObjID,idMap,AcDb::kDrcIgnore);
 //acdbHostApplicationServices()->setWorkingDatabase(pTempDb);
 
 //if (Acad::eOk!=acdbHostApplicationServices()->workingDatabase()
  //->insert(AcGeMatrix3d::kIdentity,pTempDb))
 //{
  //acedAlert(_T("insert 操作失败！"));
 //}
 
 //delete pTempDb;
 pTempDb->saveAs(str);
 delete  pTempDb;