[求助]删除新建的AcDbDatabase对象时出错

btleader

 char fullfileName[100];
  strcpy(fullfileName,"hzb.dwg");
  AcDbDatabase* pCurDb;
  pCurDb=acdbCurDwg();
  Acad::ErrorStatus es;
  AcDbDatabase* pDb = new AcDbDatabase(Adesk::kFalse);
  es=pDb->readDwgFile(fullfileName);
  if(es!=Acad::eOk)
  {
   ads_printf("\n The %c file was not found. ",fullfileName);
   delete pDb;
   return es;
  }

es=pCurDb->insert(AcGeMatrix3d::kIdentity,pDb);
  if( es!= Acad::eOk)
  {
   delete pCurDb;
   return es;
  }

  delete pDb;
  return es;

为什么执行到 delete pDb就报错提示“致命错误：heap error”，其它部分执行正常，这段代码从网上摘抄的，不只哪位大侠知道原因，在下不胜感激，我用的是AutoCAD R14.