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 最近看了中望CAD上的鎖定解鎖圖紙，發現其實是通過多重插入塊來實現的，其設定的密碼也毫無意義，對通過ARX程式碼來解鎖毫無影響。下面是個人寫的通過多重插入塊鎖定解鎖的程式碼。注：使用了ArxDbg程式碼，ArxDbg見objectArx 安裝目錄下,例如：C:ObjectARX\samples\database\ARXDBG

void CLockDwg::doLockDwg()
{
	auto state = m_selset.userSelect(L"請選擇需要鎖定的物件:", L"請選擇需要移除的物件:");
	if (state != ArxDbgSelSet::kSelected)
	{
		return;
	}

	AcDbBlockTableRecord *pBlkTblRec = ArxDbgUtils::openCurrentSpaceBlock(AcDb::kForRead, acdbCurDwg());

	AcDbExtents extents;
	extents.addBlockExt(pBlkTblRec);
	pBlkTblRec->close();

	m_basePt = AcGePoint3d(extents.minPoint().x, extents.maxPoint().y, 0);

	AcDbObjectId blkdefId;
	AcDbBlockTableRecord *pNewBlkTblRec;
    //建立匿名塊
	ArxDbgUtils::defineNewAnonymousBlock(pNewBlkTblRec, blkdefId, acdbCurDwg());
	pNewBlkTblRec->setOrigin(m_basePt);
	pNewBlkTblRec->close();
	AcDbObjectIdArray selectIds;
	m_selset.asArray(selectIds);
    
	ArxDbgUtils::cloneObjects(acdbCurDwg(), selectIds, blkdefId, false);
    
    //建立多重插入塊
	AcDbMInsertBlock *pMinsertBlk = new AcDbMInsertBlock(m_basePt, blkdefId, 1, 1, 0, 0);

	ArxDbgUtils::addToCurrentSpaceAndClose(pMinsertBlk);
    

    for(int i = 0; i < selectIds.length(); i++)
	{
		AcDbEntityPointer pEnt(selectIds[i],AcDb::kForWrite);
		pEnt->erase();
		pEnt->close();
	}

}
 

void CLockDwg::doUnLockDwg()
{
	struct resbuf *rb;
	rb = acutBuildList(100,L"AcDbMInsertBlock",RTNONE);
	m_selset.setAllowSingleOnly(true,false);
	m_selset.userSelect(L"請選擇需要解鎖的實體",L"請選擇要移除的實體:",rb);
	
	AcDbObjectIdArray idArr;
	m_selset.asArray(idArr);

	AcDbMInsertBlock *pMInsert;
	acdbOpenObject(pMInsert,idArr.at(0),AcDb::kForWrite);
	AcDbObjectId blkTblRecId = pMInsert->blockTableRecord();

	AcDbDatabase *pCurDb = acdbCurDwg();
	
	AcDbDatabase *pOutPutDb = NULL;
	pCurDb->wblock(pOutPutDb,blkTblRecId);

	pCurDb->insert(AcGeMatrix3d(),pOutPutDb);
	pOutPutDb = NULL;

	pMInsert->erase();
	pMInsert->close();

	delete pOutPutDb;
	acutRelRb(rb);
}
 

​