143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
/*--------------------------------------------------------------------------*
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*
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* Microsoft Windows
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* Copyright (C) Microsoft Corporation, 1992 - 000
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*
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* File: regutil.inl
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*
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* Contents: Inline functions for regutil.h
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*
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* History: 24-Apr-2000 jeffro Created
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*
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*--------------------------------------------------------------------------*/
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#pragma once
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#include "regkeyex.h"
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/*+-------------------------------------------------------------------------*
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* IsIndirectStringSpecifier
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*
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* Returns true if the given string looks like it might be an indirect
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* string specifier acceptable to SHLoadRegUIString, i.e. "@dllname,-id".
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*
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* Returns false otherwise
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*--------------------------------------------------------------------------*/
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inline bool IsIndirectStringSpecifier (LPCTSTR psz)
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{
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return ((psz != NULL) && (psz[0] == _T('@')) && (_tcsstr(psz, _T(",-")) != NULL));
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}
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/*+-------------------------------------------------------------------------*
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* ScGetSnapinNameFromRegistry
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*
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* Loads the name of a snap-in from the given snap-in CLSID.
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*
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* The template type StringType can be any string class that supports
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* MFC's CString interface (i.e. MFC's CString, WTL::CString, or MMC's
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* CStr).
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*--------------------------------------------------------------------------*/
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template<class StringType>
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SC ScGetSnapinNameFromRegistry (
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const CLSID& clsid,
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StringType& str)
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{
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DECLARE_SC (sc, _T("ScGetSnapinNameFromRegistry"));
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/*
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* convert class id to string
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*/
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OLECHAR szClsid[40];
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if (!StringFromGUID2 (clsid, szClsid, countof(szClsid)))
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return (sc = E_INVALIDARG);
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/*
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* load the name
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*/
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USES_CONVERSION;
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sc = ScGetSnapinNameFromRegistry (OLE2T(szClsid), str);
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if (sc)
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return (sc);
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return (sc);
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}
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/*+-------------------------------------------------------------------------*
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* ScGetSnapinNameFromRegistry
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*
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* Loads the name of a snap-in from the given snap-in CLSID string.
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*
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* The template type StringType can be any string class that supports
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* MFC's CString interface (i.e. MFC's CString, WTL::CString, or MMC's
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* CStr).
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*--------------------------------------------------------------------------*/
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template<class StringType>
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SC ScGetSnapinNameFromRegistry (
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LPCTSTR pszClsid,
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StringType& str)
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{
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DECLARE_SC (sc, _T("ScGetSnapinNameFromRegistry"));
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/*
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* open HKLM\Software\Microsoft\MMC\SnapIns\{CLSID}
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*/
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StringType strKeyName = StringType(SNAPINS_KEY) + _T("\\") + pszClsid;
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CRegKeyEx SnapinKey;
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LONG lRet = SnapinKey.Open (HKEY_LOCAL_MACHINE, strKeyName, KEY_READ);
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if (ERROR_SUCCESS != lRet)
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return (sc = HRESULT_FROM_WIN32 (lRet));
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/*
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* load the string
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*/
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sc = ScGetSnapinNameFromRegistry (SnapinKey, str);
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if (sc)
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return (sc);
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return (sc);
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}
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/*+-------------------------------------------------------------------------*
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* ScGetSnapinNameFromRegistry
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*
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* Loads the name of a snap-in from the given open snap-in registry key.
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* First, we'll try to use SHLoadRegUIString to resolve an indirect name
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* in the "NameStringIndirect" value. If that fails (because "NameString-
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* Indirect" isn't registered, because the registered DLL can't be loaded,
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* etc.), we'll fall back to the old "NameString" entry.
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*
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* The template type StringType can be any string class that supports
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* MFC's CString interface (i.e. MFC's CString, WTL::CString, or MMC's
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* CStr).
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*--------------------------------------------------------------------------*/
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template<class StringType>
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SC ScGetSnapinNameFromRegistry (
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CRegKeyEx& key, /* I:snap-in's key, opened for read */
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StringType& str) /* O:name of snap-in */
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{
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DECLARE_SC (sc, _T("ScGetSnapinNameFromRegistry"));
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/*
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* try to load the MUI-friendly name first, ignoring errors
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*/
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sc = key.ScLoadRegUIString (g_szNameStringIndirect, str);
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/*
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* if an error occurred, or ScLoadReagUIString couldn't resolve the
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* @dllname syntax, or the returned string was empty, fall back
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* on the legacy registry entry
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*/
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if (sc.IsError() || str.IsEmpty() || IsIndirectStringSpecifier(str))
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sc = key.ScQueryString (g_szNameString, str, NULL);
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return (sc);
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}
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