comdef.h

vc6.0完整版

/***
* comdef.h - Native C++ compiler COM support - main definitions header
*
*	Copyright (C) 1996-1997 Microsoft Corporation
*	All rights reserved.
*
****/

#if _MSC_VER > 1000
#pragma once
#endif

#if !defined(_INC_COMDEF)
#define _INC_COMDEF

#ifndef  __cplusplus
#error Native Compiler support only available in C++ compiler
#endif

#include <ole2.h>
#include <olectl.h>

#include <comutil.h>

#pragma warning(push)
#pragma warning(disable: 4244)
#pragma warning(disable: 4290)

#pragma comment(lib, "comsupp.lib")

#pragma comment(lib, "user32.lib")
#pragma comment(lib, "ole32.lib")
#pragma comment(lib, "oleaut32.lib")

class _com_error;

void __stdcall
	_com_raise_error(HRESULT hr, IErrorInfo* perrinfo = 0) throw(_com_error);

void __stdcall
	_com_issue_error(HRESULT) throw(_com_error);
void __stdcall
	_com_issue_errorex(HRESULT, IUnknown*, REFIID) throw(_com_error);

HRESULT __stdcall
	_com_dispatch_propget(IDispatch*, DISPID, VARTYPE, void*) throw(_com_error);
HRESULT __cdecl
	_com_dispatch_propput(IDispatch*, DISPID, VARTYPE, ...) throw(_com_error);
HRESULT __cdecl
	_com_dispatch_method(IDispatch*, DISPID, WORD, VARTYPE, void*,
						 const wchar_t*, ...) throw(_com_error);

HRESULT __stdcall
	_com_dispatch_raw_propget(IDispatch*, DISPID, VARTYPE, void*) throw();
HRESULT __cdecl
	_com_dispatch_raw_propput(IDispatch*, DISPID, VARTYPE, ...) throw();
HRESULT __cdecl
	_com_dispatch_raw_method(IDispatch*, DISPID, WORD, VARTYPE, void*,
							 const wchar_t*, ...) throw();

class _com_error {
public:
	// Constructors
	//
	_com_error(HRESULT hr,
               IErrorInfo* perrinfo = NULL,
               bool fAddRef = false) throw();
	_com_error(const _com_error& that) throw();

	// Destructor
	//
	virtual ~_com_error() throw();

	// Assignment operator
	//
	_com_error& operator=(const _com_error& that) throw();

	// Accessors
	//
	HRESULT Error() const throw();
	WORD WCode() const throw();
	IErrorInfo * ErrorInfo() const throw();

	// IErrorInfo method accessors
	//
	_bstr_t Description() const throw(_com_error);
	DWORD HelpContext() const throw();
	_bstr_t HelpFile() const throw(_com_error);
	_bstr_t Source() const throw(_com_error);
	GUID GUID() const throw();

	// FormatMessage accessors
	const TCHAR * ErrorMessage() const throw();

	// EXCEPINFO.wCode <-> HRESULT mappers
	static HRESULT WCodeToHRESULT(WORD wCode) throw();
	static WORD HRESULTToWCode(HRESULT hr) throw();

private:
	enum {
		WCODE_HRESULT_FIRST = MAKE_HRESULT(SEVERITY_ERROR, FACILITY_ITF, 0x200),
		WCODE_HRESULT_LAST = MAKE_HRESULT(SEVERITY_ERROR, FACILITY_ITF+1, 0) - 1
	};
	const HRESULT			m_hresult;
	IErrorInfo *			m_perrinfo;
	mutable TCHAR *			m_pszMsg;
};

inline _com_error::_com_error(HRESULT hr,
                              IErrorInfo* perrinfo,
                              bool fAddRef) throw()
	: m_hresult(hr), m_perrinfo(perrinfo), m_pszMsg(NULL)
{
	if (m_perrinfo != NULL && fAddRef) {
		m_perrinfo->AddRef();
	}
}

inline _com_error::_com_error(const _com_error& that) throw()
	: m_hresult(that.m_hresult), m_perrinfo(that.m_perrinfo), m_pszMsg(NULL)
{
	if (m_perrinfo != NULL) {
		m_perrinfo->AddRef();
	}
}

inline _com_error::~_com_error() throw()
{
	if (m_perrinfo != NULL) {
		m_perrinfo->Release();
	}
	if (m_pszMsg != NULL) {
		LocalFree((HLOCAL)m_pszMsg);
	}
}

inline _com_error& _com_error::operator=(const _com_error& that) throw()
{
	if (this != &that) {
		this->_com_error::~_com_error();
		this->_com_error::_com_error(that);
	}
	return *this;
}

inline HRESULT _com_error::Error() const throw()
{
	return m_hresult;
}

inline WORD _com_error::WCode() const throw()
{
	return HRESULTToWCode(m_hresult);
}

inline IErrorInfo * _com_error::ErrorInfo() const throw()
{
	if (m_perrinfo != NULL) {
		m_perrinfo->AddRef();
	}
	return m_perrinfo;
}

inline _bstr_t _com_error::Description() const throw(_com_error)
{
	BSTR bstr = NULL;
	if (m_perrinfo != NULL) {
		m_perrinfo->GetDescription(&bstr);
	}
	return _bstr_t(bstr, false);
}

inline DWORD _com_error::HelpContext() const throw()
{
	DWORD dwHelpContext = 0;
	if (m_perrinfo != NULL) {
		m_perrinfo->GetHelpContext(&dwHelpContext);
	}
	return dwHelpContext;
}

inline _bstr_t _com_error::HelpFile() const throw(_com_error)
{
	BSTR bstr = NULL;
	if (m_perrinfo != NULL) {
		m_perrinfo->GetHelpFile(&bstr);
	}
	return _bstr_t(bstr, false);
}

inline _bstr_t _com_error::Source() const throw(_com_error)
{
	BSTR bstr = NULL;
	if (m_perrinfo != NULL) {
		m_perrinfo->GetSource(&bstr);
	}
	return _bstr_t(bstr, false);
}

inline _GUID _com_error::GUID() const throw()
{
	_GUID guid;
	memcpy(&guid, &__uuidof(NULL), sizeof(_GUID));
	if (m_perrinfo != NULL) {
		m_perrinfo->GetGUID(&guid);
	}
	return guid;
}

inline const TCHAR * _com_error::ErrorMessage() const throw()
{
	if (m_pszMsg == NULL) {
		FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
					  NULL,