[求助]：为什么readdwgfile()不能读出dwg文件？

sandf

我的程序是：
    Acad::ErrorStatus es;

    AcDbDatabase *extDb= new AcDbDatabase(Adesk::kFalse);
    es=extDb->readDwgFile(LPCTSTR(dwgFile));
    if (es!=Acad::eOk)
    {
        acutPrintf("\nThe file %s cannot be opend",LPCTSTR(dwgFile));
        return;
    }
    AcDbBlockTable *pBT=NULL;
    extDb->getBlockTable(pBT,AcDb::kForRead);
    AcDbBlockTableRecord *pBTRecord=NULL;
    if(Acad::eOk!=pBT->getAt(blockname,pBTRecord,AcDb::kForRead))        return;
    pBT->close();
   
    AcDbObjectId blockId= pBTRecord->objectId();
    AcDbDatabase* pTempDb;
    extDb->wblock(pTempDb,blockId);
    AcDbObjectId Id;
    acedCommand(RTSTR,"erase",RTSTR,"all",RTSTR,"",0);
    acdbHostApplicationServices()->workingDatabase()->insert(AcGeMatrix3d::kIdentity,pTempDb);
    pBTRecord->close();
    delete pTempDb;
    delete extDb;
可是es=extDb->readDwgFile(LPCTSTR(dwgFile));的返回值不是eok，而是eLockViolation，这是怎么回事阿？请各位大侠指教。

yusongrong

SDK里有相关的例子，readDwgFile只能读入数据库不能显示DWG文件。

binbin

eLockViolation是因为没有锁文档