[求助]多文档和数据库写入的问题

gqtlsj

我要实现的功能是：在cad中已经打开了一个文件，然后我提取了这个数据库中我所需要的某些实体并存入ID，然后用acDocManager再新建一个文档，然后把刚才存起来的实体写入这个新建的模型空间，可是要么写入原来的文档中，要么就写不进去，请问要如何实现呢。已经调试发现现在得问题是运行到写入的时候CAD提示不能写入，请问是为什么。下面是试验代码，请各位帮帮忙吧，谢谢大家：

void main()

{

    newSyncDoc();                   

 

    AcApDocument* NewDoc;                                               //

    pDocIter = acDocManager->newAcApDocumentIterator();  //

    for ( ; !pDocIter->done(); pDocIter->step())                    //

   {                                                                                   //找到新建文档指针
        NewDoc = pDocIter->document();                               //
    }                                                                                  //
    delete pDocIter;                                                             //

 

    acDocManager->setCurDocument(NewDoc);                  //设置当前文档
    acDocManager->activateDocument(NewDoc,true);         //激活当前文档，并且第2个参数要设为ture，否则不往下运行。

    acDocManager->unlockDocument(NewDoc);                  //将新建文档解锁

    AcDbDatabase* pNewDb=NewDoc->database();        //得到新建文档连接的数据库

 

    AcDbBlockTable* pBlockTable;

    pNewDb->getSymbolTable(pBlockTable,AcDb::kForRead);

    AcDbBlockTableRecord* pBlockTableRecord;
    pBlockTable->getAt(ACDB_MODEL_SPACE,pBlockTableRecord,AcDb::kForWrite);  
    pBlockTable->close();                                                                              

   

    AcGePoint3d ptCenter(0,0,0);                                           //
    AcGeVector3d vec(0,0,1);                                                 //
    double rad=10000;                                                          //
    AcDbCircle* pCircle=new AcDbCircle(ptCenter,vec,rad);        //做了个圆写进去

    AcDbObjectId id;                                                              //
    pBlockTableRecord->appendAcDbEntity(id,pCircle);              //到这里就出错了，CAD显示写入错误

                                

    pBlockTableRecord->close();

    acDocManager->lockDocument(NewDoc);                  //将新建文档锁定

    delete pNewDb;

}

 

void newSyncDocHelper(void *pData)
{
     AcApDocument* pDoc = acDocManager->curDocument();
     if (acDocManager->isApplicationContext())

    {
          acDocManager->appContextNewDocument((const TCHAR *)pData);
          acDocManager->activateDocument(pDoc);        //激活原先的文档，否则运行到newSyncDoc()语句后不往下运行
     }

     else
     acutPrintf(_T("\nERROR: in Document context : %s\n"),pDoc->fileName());

}

void newSyncDoc()
{
     static TCHAR pData[] = _T(/*NOXLATE*/"acad.dwt");
     AcApDocument* pDoc = acDocManager->curDocument();
     if (pDoc)

    {
      acDocManager->executeInApplicationContext(newSyncDocHelper, (void *)pData);
    }   

}