#pragma once
class SHAcDbBlockTableRecPtr 
{
public:

	SHAcDbBlockTableRecPtr(const TCHAR *pszBlock = ACDB_MODEL_SPACE, 
		AcDb::OpenMode opMode = AcDb::kForRead, AcDbDatabase *pDb = NULL);

	SHAcDbBlockTableRecPtr(const AcDbObjectId &id, AcDb::OpenMode opMode = AcDb::kForRead);

	~SHAcDbBlockTableRecPtr();

	int operator !();

	operator AcDbBlockTableRecord & ();

	void Close();

public:
	
	AcDbBlockTableRecord *m_pBlockTableRec;
};

inline SHAcDbBlockTableRecPtr::SHAcDbBlockTableRecPtr(const AcDbObjectId &id, AcDb::OpenMode opMode)
: m_pBlockTableRec(NULL)
{
	acdbOpenObject(m_pBlockTableRec, id, opMode);
}

inline SHAcDbBlockTableRecPtr::SHAcDbBlockTableRecPtr(const TCHAR *pszBlock, AcDb::OpenMode opMode,
											 AcDbDatabase *pDb)
											 : m_pBlockTableRec(NULL)
{
	if (!pDb)
	{
		pDb = acdbCurDwg();
	}
	
	AcDbBlockTable *pBlockTable;
	Acad::ErrorStatus es = pDb->getBlockTable(pBlockTable,  AcDb::kForRead);
	if (es != Acad::eOk) 
	{
		return;
	}
	
	es = pBlockTable->getAt(pszBlock, m_pBlockTableRec, opMode);
	pBlockTable->close();
}

inline SHAcDbBlockTableRecPtr::~SHAcDbBlockTableRecPtr()
{
	if (m_pBlockTableRec) 
	{
		m_pBlockTableRec->close();
	}
}

inline int SHAcDbBlockTableRecPtr::operator !() 
{
	return !m_pBlockTableRec;
}

inline void SHAcDbBlockTableRecPtr::Close()
{
	if (m_pBlockTableRec)
	{
		m_pBlockTableRec->close();
	}
	
	m_pBlockTableRec = NULL;
}

inline SHAcDbBlockTableRecPtr::operator AcDbBlockTableRecord & ()
{
	assert(m_pBlockTableRec);
	
	return *m_pBlockTableRec;
}