objectarx 读取外部DWG图到当前图形

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objectarx 读取外部DWG图到当前图形
void CTrimeDraw::MyReadDwgFile(CString str)
{

AcDbDatabase pExternalDb(Adesk::kFalse);
// 外部图形数据库
if (Acad::eOk != pExternalDb.readDwgFile(str,_SH_DENYRW,false))
{
  acedAlert(_T("读取DWG文件失败!"));
  return;
}

AcDbDatabase *pTempDb,*pData;
if (Acad::eOk!=pExternalDb.wblock(pTempDb))
{
  acedAlert(_T("wBlock操作失败"));
  return;
}

pData=acdbHostApplicationServices()->workingDatabase();
if (Acad::eOk!=pData
  ->insert(AcGeMatrix3d::kIdentity,pTempDb))
{
  acedAlert(_T("insert 操作失败！"));
}
delete pTempDb;
acdbHostApplicationServices()->setWorkingDatabase(pData);
}