ObjectARX学习笔记(二十六)--如何炸开块AcDbBlockReference

小咪咪 2022-08-12 16:11 522阅读 0赞

AcDbBlockTable *pBlockTable = NULL;
    	Acad::ErrorStatus es = acdbHostApplicationServices()->workingDatabase->getBlockTable(pBlockTable, AcDb::kForRead); //得到块表指针
    	
    
    	AcDbBlockTableRecord *pBlockTableRecord = NULL;
    	es = pBlockTable->getAt(ACDB_MODEL_SPACE,pBlockTableRecord,AcDb::kForWrite);	//得到块表记录指针
    	
    	pBlockTable->close();
    	pBlockTable = NULL;
    
    	AcDbBlockTableRecordIterator *pBlockIter = NULL;
    	es = pBlockTableRecord->newIterator(pBlockIter);
    			
    	for (pBlockIter->start(); !pBlockIter->done(); pBlockIter->step())
    	{
    		AcDbObjectId objTmpId = AcDbObjectId::kNull;
    		pBlockIter->getEntityId(objTmpId);
    		//块在模型空间中是以AcDbBlockReference存在 所以打开这个直接炸开就可以了
    		AcDbObjectPointer<AcDbBlockReference> pEnt(objTmpId, AcDb::kForRead);
    		if (pEnt.openStatus() == Acad::eOk)		
    		{
    			AcDbVoidPtrArray entitySet;
    			es = pEnt->explode(entitySet);
    			if (es != Acad::eOk)
    			{
    				acutPrintf(_T("\n炸开块失败"));	
    			}
    			else
    			{
    				for (int i = 0; i < entitySet.length(); i++)
    				{
    					AcDbEntity* pEnty = (AcDbEntity*)entitySet.at(i);
    					if (pEnty != NULL)
    					{
    						pBlockTableRecord->appendAcDbEntity(pEnty);//将炸开的实体添加到模型空间中
    						pEnty->close();
    					}	
    				}
    			}
    		}
    	}
    	pBlockTableRecord->close();
    	pBlockTableRecord = NULL;
    
    	if (pBlockIter != NULL)
    	{
    		delete pBlockIter;
    		pBlockIter = NULL;
    	}