Source code of Windows XP (NT5)
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75 lines
938 B

//
// auto_sa.h SAFEARRAY
//
#pragma once
class auto_sa
{
public:
auto_sa()
: _psa(0),
_Owns(true)
{}
~auto_sa()
{
if(_psa && _Owns)
{
_psa->cLocks= 0;
::SafeArrayDestroy(_psa);
}
}
bool Ownership(bool fOwns)
{ return _Owns = fOwns; }
operator SAFEARRAY *() { return _psa; }
operator const SAFEARRAY *() const { return _psa; }
auto_sa& operator=(auto_sa& rhs)
{
if(_psa == rhs._psa)
return *this;
clear();
_Owns= rhs._Owns;
_psa= rhs.release();
return *this;
}
auto_sa& operator=(SAFEARRAY* psa)
{
clear();
_psa= psa;
_Owns= true;
return *this;
}
operator bool()
{ return NULL != _psa; }
operator !()
{ return NULL == _psa; }
void clear()
{
if(_psa && _Owns)
{
_psa->cLocks= 0;
::SafeArrayDestroy(_psa);
}
_psa= NULL;
}
SAFEARRAY* release()
{
SAFEARRAY* psa= _psa;
_psa= NULL;
return psa;
}
protected:
SAFEARRAY *_psa;
bool _Owns;
};