C / C++ / MFC

class CDBStatement;

class CDBStatementService // a pseudo-function-service :)
{
  bool m_bOwner;
  CDBStatement* m_pcStatement;

public:
  CDBStatementService(CDBStatement* pcStatement, bool bOwner)
    : m_pcStatement(pcStatement), m_bOwner(bOwner) {};

  ~CDBStatementService() {
    if (m_pcStatement) {
      m_pcStatement->Close();
      if (m_bOwner) {
        delete m_pcStatement;
      }
    }
  }
};

void TestThrowing()
{
  CDBStatementService cDBStatementService(new CDBStatement(), true);

  // here could be a throwing... :)
  //..

} // the destructor of the service will be called, even there was a throwing 

They sought it with thimbles, they sought it with care;
They pursued it with forks and hope;
They threatened its life with a railway-share;
They charmed it with smiles and soap.

pandit84 wrote:

but could not able to use that

bankey1010 wrote:

I have Win32 DLL which exporting Classes only but i dont have any header file.
I have only library file and DLL.

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UpdateData(FALSE);