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