Leaked source code of windows server 2003
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//****************************************************************************
//
// BLClient sample for Microsoft Messenger SDK
//
// Module: BLClient.exe
// File: clUtil.h
// Content: Usefull clases for COM and Connection points
//
//
// Copyright (c) Microsoft Corporation 1997-1998
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//****************************************************************************
#ifndef _CL_UTIL_H_
#define _CL_UTIL_H_
//****************************************************************************
//
// CLASS RefCount
//
//****************************************************************************
class RefCount
{
private:
LONG m_cRef;
public:
RefCount();
// Virtual destructor defers destruction to destructor of derived class.
virtual ~RefCount();
ULONG STDMETHODCALLTYPE AddRef(void);
ULONG STDMETHODCALLTYPE Release(void);
};
//****************************************************************************
//
// CLASS CNotify
//
// Notification sink
//
//****************************************************************************
class CNotify
{
private:
DWORD m_dwCookie;
IUnknown * m_pUnk;
IConnectionPoint * m_pcnp;
IConnectionPointContainer * m_pcnpcnt;
public:
CNotify(void);
~CNotify();
HRESULT Connect(IUnknown *pUnk, REFIID riid, IUnknown *pUnkN);
HRESULT Disconnect(void);
IUnknown * GetPunk() {return m_pUnk;}
};
//****************************************************************************
//
// CLASS BSTRING
//
//****************************************************************************
class BSTRING
{
private:
BSTR m_bstr;
public:
// Constructors
BSTRING() {m_bstr = NULL;}
inline BSTRING(LPCWSTR lpcwString);
#ifndef UNICODE
// We don't support construction from an ANSI string in the Unicode build.
BSTRING(LPCSTR lpcString);
#endif // #ifndef UNICODE
// Destructor
inline ~BSTRING();
// Cast to BSTR
operator BSTR() {return m_bstr;}
inline LPBSTR GetLPBSTR(void);
};
BSTRING::BSTRING(LPCWSTR lpcwString)
{
if (NULL != lpcwString)
{
m_bstr = SysAllocString(lpcwString);
// ASSERT(NULL != m_bstr);
}
else
{
m_bstr = NULL;
}
}
BSTRING::~BSTRING()
{
if (NULL != m_bstr)
{
SysFreeString(m_bstr);
}
}
inline LPBSTR BSTRING::GetLPBSTR(void)
{
// This function is intended to be used to set the BSTR value for
// objects that are initialized to NULL. It should not be called
// on objects which already have a non-NULL BSTR.
// ASSERT(NULL == m_bstr);
return &m_bstr;
}
//****************************************************************************
//
// CLASS BTSTR
//
//****************************************************************************
class BTSTR
{
private:
LPTSTR m_psz;
public:
BTSTR(BSTR bstr);
~BTSTR();
// Cast to BSTR
operator LPTSTR() {return (NULL == m_psz) ? TEXT("<null>") : m_psz;}
};
LPTSTR LPTSTRfromBstr(BSTR bstr);
#endif // _CL_UTIL_H_