138 lines
3.7 KiB
C
138 lines
3.7 KiB
C
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/***************************************************************************/
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/** Microsoft Windows **/
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/** Copyright(c) Microsoft Corp., 1995-1996 **/
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/***************************************************************************/
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/****************************************************************************
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regentry.h
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Oct. 95 LenS
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Wrapper for registry access
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Construct a RegEntry object by specifying the subkey (under
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HKEY_CURRENT_USER by default, but can be overridden.)
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All member functions (except the destructor) set an internal
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error state which can be retrieved with GetError().
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Zero indicates no error.
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RegEntry works only with strings and DWORDS which are both set
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using the overloaded function SetValue()
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SetValue("valuename", "string");
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SetValue("valuename", 42);
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Values are retrieved with GetString() and GetNumber().
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GetNumber() allows you to specificy a default if the valuename doesn't
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exist.
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GetString() returns a pointer to a string internal to RegEntry that is
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invalidated when another fuction is called on the same RegEntry object
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(e.g. its destructor) so, if you want to use the string beyond this
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time, then you must copy it out of the RegEntry object first.
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DeleteValue() removes the valuename and value pair.
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Registry flushes are automatic when RegEntry is destroys or moves to
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another key.
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****************************************************************************/
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#ifndef REGENTRY_INC
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#define REGENTRY_INC
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class RegEntry
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{
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public:
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RegEntry( LPCTSTR pszSubKey,
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HKEY hkey = HKEY_CURRENT_USER,
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BOOL fCreate = TRUE,
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REGSAM samDesired = 0
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);
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~RegEntry();
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long GetError() { return m_error;}
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VOID ClearError() {m_error = ERROR_SUCCESS;}
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long SetValue(LPCTSTR pszValueName, LPCTSTR string);
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long SetValue(LPCTSTR pszValueName, unsigned long dwNumber);
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long SetValue(LPCTSTR pszValue, void* pData, DWORD cbLength);
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LPTSTR GetString(LPCTSTR pszValueName);
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DWORD GetBinary(LPCTSTR pszValueName, void** ppvData);
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long GetNumber(LPCTSTR pszValueName, long dwDefault = 0);
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ULONG GetNumberIniStyle(LPCTSTR pszValueName, ULONG dwDefault = 0);
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long DeleteValue(LPCTSTR pszValueName);
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long FlushKey();
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VOID MoveToSubKey(LPCTSTR pszSubKeyName);
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HKEY GetKey() { return m_hkey; }
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private:
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VOID ChangeKey(HKEY hNewKey);
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VOID UpdateWrittenStatus();
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VOID ResizeValueBuffer(DWORD length);
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HKEY m_hkey;
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long m_error;
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BOOL m_fhkeyValid;
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LPBYTE m_pbValueBuffer;
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DWORD m_cbValueBuffer;
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BOOL m_fValuesWritten;
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TCHAR m_szNULL;
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};
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inline long
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RegEntry::FlushKey()
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{
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if (m_fhkeyValid) {
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m_error = ::RegFlushKey(m_hkey);
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}
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return m_error;
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}
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class RegEnumValues
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{
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public:
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RegEnumValues(RegEntry *pRegEntry);
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~RegEnumValues();
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long Next();
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LPTSTR GetName() {return m_pchName;}
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DWORD GetType() {return m_dwType;}
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LPBYTE GetData() {return m_pbValue;}
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DWORD GetDataLength() {return m_dwDataLength;}
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DWORD GetCount() {return m_cEntries;}
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private:
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RegEntry * m_pRegEntry;
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DWORD m_iEnum;
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DWORD m_cEntries;
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LPTSTR m_pchName;
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LPBYTE m_pbValue;
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DWORD m_dwType;
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DWORD m_dwDataLength;
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DWORD m_cMaxValueName;
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DWORD m_cMaxData;
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LONG m_error;
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};
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class RegEnumSubKeys
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{
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public:
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RegEnumSubKeys(RegEntry *pRegEntry);
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~RegEnumSubKeys();
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long Next();
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LPTSTR GetName() {return m_pchName;}
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DWORD GetCount() {return m_cEntries;}
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protected:
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RegEntry * m_pRegEntry;
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DWORD m_iEnum;
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DWORD m_cEntries;
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LPTSTR m_pchName;
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DWORD m_cMaxKeyName;
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LONG m_error;
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};
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#endif // REGENTRY_INC
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