C / C++ / MFC

George_George wrote:

But I think it is not implemented in Visual Studio, right?

George_George wrote:

any comments/options about our original question (put your good ideas about shared_ptr aside for a while)? Is my understanding correct?

template <typename t="">
class ScopePtr
{
   T * m_pT;
 public:
   ScopePtr(T * pT) : m_pT(pT) {}
  ~ScopePtr() { delete m_pT; }
   T * ptr() { return m_pT; }
}
</typename>

void Foo()
{
  ScopePtr<bar> bar(new Bar()); // instead of Bar * bar = new Bar();
  bar.ptr()->Run(); // instead of bar->Run();
  ...         
}
</bar>

BSTR temp = 0;
HRESULT hr = get_Path(&temp);
// TODO: handle errors here
m_bstrNewPath.Attach(temp);

_bstr_t path = ...; // from whereever

BSTR temp = path.Detach();
HRESULT hr = comObject->ModifyPath(&temp);
path.Attach(temp);
if (FAILED(hr))
{
  // handle error here
}

George_George wrote:

2. I think b_ is declared and initialized...

class C
{
  int b_;
public:	
	C():b_(10)
  {
	  
	try
	{
		int t = 0; 
		int j = 20/t; // Raise an exception
		int c = t;
	}
	catch( ... )
	{
		cout<<b_<<endl/*<<"c won't be available over here in catch block, b_ is available*/;
	}
  }
};

Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_

tasumisra wrote:

are they just be useful only for COM application...

Somethings seem HARD to do, until we know how to do them.
_AnShUmAn_

GetDlgItem(IDC_BUTTON1)->EnableWindow( FALSE );

m_btnButton1.EnableWindow( FALSE ); // Using control variable