objectarx 把当前图形输出

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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;