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116 lines
4 KiB
C++
116 lines
4 KiB
C++
//
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// RegistryTree.h: interface for the CRegistryTree class.
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//
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//////////////////////////////////////////////////////////////////////
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#if !defined(REGISTRYTREE_H__239A6461_70F2_11D3_9085_204C4F4F5020__INCLUDED_)
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#define REGISTRYTREE_H__239A6461_70F2_11D3_9085_204C4F4F5020__INCLUDED_
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#include "RegistryKey.h"
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// Max size of error description.
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#define ERROR_MSG_BUFFER_SIZE 1024
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class CRegistryTree
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{
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public:
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// Constructor
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//
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// Parameters:
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// nMaxPathSize - size in characters of longest path including terminating NULL char
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CRegistryTree();
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// Destructor
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virtual ~CRegistryTree();
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// Call this function after fail of this class method.
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//
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// Return value:
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// Pointer to buffer containing description of last error.
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// return value is valid until next method of this class is called.
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const TCHAR * GetLastErrorDescription();
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// Call this function to get string representation (path) of current key.
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//
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// Return value:
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// Pointer to buffer containing current key path. The pointer is valid until next call to this objet method.
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const TCHAR * GetCurrentPath() const;
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// Call this function to check if current key is the root key.
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//
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// Return value:
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// FALSE - current key is not the root key.
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// TRUE - current key is the root key.
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BOOL IsCurrentRoot();
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// Call this function to change the current key.
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//
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// Parameters:
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// pchRelativePath - relative path to target key.
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//
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// Return value:
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// TRUE - current key changed successfully.
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// FALSE - failed to change current key. Call GetLastErrorDescription() to get error description.
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BOOL ChangeCurrentKey(const TCHAR *pchRelativePath);
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// Call this function to obtain key at relative path and opened with desired access.
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//
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// Parametes:
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// pchRelativePath - path to key to be opened.
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// DesiredAccess - desired access to key.
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// rKey - reference to variable that receives pointer to key. Caller must free object with delete operator, when object is not longer needed.
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//
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// Return value:
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// TRUE - key opened successfully.
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// FALSE - failed to open desired key path size. Call GetLastErrorDescription() to get error description.
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BOOL GetKey(const TCHAR *pchRelativePath, REGSAM DesiredAccess, CRegistryKey& rKey);
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// Call this function to delete key subkeys.
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//
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// Parameters:
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// pszKeyPattern - pattern to specifying which subkeys to delete.
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// pszPath - path to key which subkeys will be deleted.
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// blnRecursive - if FALSE and particular subkey has subkeys, it will not be deleted.
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//
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// Return value:
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// TRUE - key opened successfully.
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// FALSE - error. Call GetLastErrorDescription() to get error description.
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BOOL DeleteSubkeys(const TCHAR *pszKeyPattern, const TCHAR *pszPath, BOOL blnRecursive = FALSE);
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BOOL NewKey(const TCHAR *pszKeyName, const TCHAR *pszPath, BOOL blnVolatile = FALSE);
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BOOL SetMachineName(LPCTSTR pszMachineName);
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// Internal methods
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private:
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CRegistryTree(const CRegistryTree& Tree);
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// returns description of error value returned by RegXXXX functions in advapi32.
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const TCHAR *GetErrorDescription(LONG nError);
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void SetError(LONG nError);
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void SetError(const TCHAR *pszFormat, ...);
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void SetErrorCommandNAOnRoot(const TCHAR *pszCommand);
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void SetInternalError();
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void AddErrorDescription(const TCHAR *pszFormat, ...);
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BOOL InternalChangeCurrentKey(const TCHAR *pszSubkeyName, REGSAM DesiredAccess);
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BOOL InternalGetSubkey(const TCHAR *pszSubkeyName, REGSAM DesiredAccess, CRegistryKey& rKey);
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void GotoRoot();
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BOOL DeleteSubkeys(CRegistryKey& rKey, const TCHAR *pszKeyPattern, BOOL blnRecursive);
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private:
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class CNode
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{
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public:
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CNode *m_pUp;
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CRegistryKey m_Key;
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} m_Root;
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CNode *m_pCurrentKey; // The current key.
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TCHAR m_ErrorMsg[ERROR_MSG_BUFFER_SIZE+1]; // Last error description buffer.
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LPTSTR m_pszMachineName; // Pointer to buffer containing machine name with leading backslashes. NULL if local.
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};
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#endif // !defined(REGISTRYTREE_H__239A6461_70F2_11D3_9085_204C4F4F5020__INCLUDED_)
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