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259 lines
11 KiB
C++
259 lines
11 KiB
C++
//
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// RegistryKey.h: interface for the CRegistryKey class.
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//
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//////////////////////////////////////////////////////////////////////
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#if !defined(REGISTRYKEY_H__FEF419ED_6EB6_11D3_907D_204C4F4F5020__INCLUDED_)
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#define REGISTRYKEY_H__FEF419ED_6EB6_11D3_907D_204C4F4F5020__INCLUDED_
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class CRegistryKey
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{
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public:
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// Constructor. Call InitXXX methods to make real construct.
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CRegistryKey();
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// Call this key to init root key.
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//
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// Parameters:
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// pszMachineName - pointer to buffer containing machine name. NULL means local machine.
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//
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// Return value:
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// S_OK - All ok.
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// E_XXX - Error.
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HRESULT InitRoot(const TCHAR *pszMachineName = NULL);
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// Call this method to init normal key.
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//
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// Parameters:
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// hKey - handle to opened key.
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// pszPath - optional path string. NULL if pszKeyName is the needed name.
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// pszKeyName - pointer to buffer conatining name of key.
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// CurrentAccess - Access of hKey.
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//
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// Remarks:
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// Constructs key object from handle.
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// The constructed object hold the handle and closes it on destruction. Do not close handle outside.
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// If pszPath is not NULL, it is concatenated with pszKeyName.
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//
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// Return value:
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// S_OK - All ok.
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// E_XXX - Error.
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HRESULT Init(HKEY hKey, const TCHAR *pszPath, const TCHAR *pszKeyName, REGSAM CurrentAccess);
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// Call this method to uninitialize the object.
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//
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// Return value:
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// S_OK - All ok.
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// E_XXX - Error.
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HRESULT Uninit();
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// Destructor
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virtual ~CRegistryKey();
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// Call ths function to check if handle to key is handle to hive root.
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//
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// Parameters:
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// hKey - handle to check.
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//
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// Return value:
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// TRUE - hKey is handle to hive root.
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// FALSE - hKey is not handle to hive root.
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static BOOL IsHive(HKEY hKey);
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// Call this method to get name of key represented by this object.
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//
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// Return value:
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// Pointer to buffer containing key name. Return value is valid until next call to this object method.
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const TCHAR * GetKeyName();
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BOOL IsRoot();
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// Call this method to open existing subkey of this key.
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//
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// Parameters:
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// samDesired - deisred access.
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// pszSubkeyName - pointer to bufer containing name of key to open.
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// rhKey - reference to variable that receives handle of opened key. If method fails, variable value is unchanged.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG OpenSubkey(REGSAM samDesired, const TCHAR *pszSubkeyName, HKEY &rhKey);
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// Call this method to open existing subkey of this key.
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//
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// Parameters:
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// samDesired - deisred access.
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// pszSubkeyName - pointer to bufer containing name of key to open.
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// rKey - reference to CRegistryKey object. If method succeeds, rKey is initialized with newly opened key.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG OpenSubkey(REGSAM samDesired, const TCHAR *pszSubkeyName, CRegistryKey &rKey);
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// Call this method to get the length in TCHARs of longest subkey name, including terminating null.
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//
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// Parameters:
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// rdwMaxSubkeyNameLength, reference to variable that receives size in TCHARs of longest subkey name.
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//
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// Return value.
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG GetSubkeyNameMaxLength(DWORD &rdwMaxSubkeyNameLength);
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// Call this method to init subkey enumeration. I.e. before first call to GetSubkeyName()
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//
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// Parameters:
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// pchSubkeyNameBuffer - pointer to buffer receiving subkey name.
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// dwBufferSize - size, in TCHARs of buffer pointed by pchSubkeyNameBuffer.
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//
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void InitSubkeyEnumeration(TCHAR *pchSubkeyNameBuffer, DWORD dwBufferSize);
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// Call this method to get next subkey name. Name is stored in buffer specified in call to InitSubKeyEnumeration.
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//
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// Parameters:
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// pdwActualSize - optional pointer to variable receiving actual size, in TCHARs, of key name. The count returned does not include the terminating null.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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// If no more items available, return error is ERROR_NO_MORE_ITEMS.
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LONG GetNextSubkeyName(DWORD *pdwActualSize = NULL);
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// Call this method to get count of subkeys.
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//
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// Parameters:
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// rdwSubkeyCount - reference to variable that receives subkey count.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG GetSubkeyCount(DWORD &rdwSubkeyCount);
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// Call this method to get the length in TCHARs of longest value name, including terminating null.
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//
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// Parameters:
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// rdwMaxValueNameBufferSize receives the length, in TCHARs, of the key's longest value name.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG GetMaxValueNameLength(DWORD& rdwMaxValueNameBufferSize);
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// Call this method to get the size of larges value data.
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//
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// Parameters:
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// rdwMaxValueDataBufferSize receives the length, in bytes, of the longest data component among the key's values.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG GetMaxValueDataSize(DWORD& rdwMaxValueDataBufferSize);
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// Call this method to init subkey enumeration. I.e. before first call to GetSubkeyName()
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//
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// Parameters:
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// pszValueNameBuffer - pointer to buffer receiving value name. If NULL, value name in not received upon iteration.
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// dwValueNameBufferSize - size, in TCHARs of buffer pointed by pszValueNameBuffer. If pszValueNameBuffer is NULL, parameter is ignored.
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// pbValueDataBuffer - pointer to buffer receiving value name. If NULL, value data is not received upon iteration.
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// dwValueDataBufferSize - size, in bytes of buffer pointed by pbValueDataBuffer. If pbValueDataBuffer is NULL, parameter is ignored.
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// pdwType - pointer to variable receiving value type. If NULL, value type is not received upon iteration.
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void InitValueEnumeration(TCHAR *pszValueNameBuffer,
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DWORD dwValueNameBufferSize,
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BYTE *pbValueDataBuffer,
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DWORD dwValueDataBufferSize,
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DWORD *pdwType);
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// Call this method to get next value name/data/type. Name/data/type is/are stored in buffer(s) specified in call to InitValueEnumeration.
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//
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// Parameters:
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// pdwNameActualSize - optional pointer to variable receiving actual size, in TCHARs, of value name. The count returned includes the terminating null.
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// pdwActualSize - optional pointer to variable receiving actual size, in bytes, of key name. The count returned does not include the terminating null.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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// If no more items available, return error is ERROR_NO_MORE_ITEMS.
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LONG GetNextValue(DWORD *pdwNameActualSize = NULL, DWORD *pdwDataActualSize = NULL);
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// Call this method to get count of values.
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//
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// Parameters:
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// rdwValueCount - reference to variable that receives value count.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG GetValueCount(DWORD& rdwValueCount);
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// Call this method to get data and/or type of default value.
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//
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// Parameters:
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// pdwType - optional pointer to variable receiving default value type. NULL if not requred.
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// pbValueDataBuffer - optional pointer to buffer receiving default value data. NULL if not requred.
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// dwValueDataBufferSize - size of buffer pointer by pbValueDataBuffer. Ignored if pbValueDataBuffer is NULL.
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// pdwValueDataActualSize - optional pointer to variable receiving size, in bytes, of data stored into buffer. If pbValueDataBuffer is NULL, returned value is size of default value data, in bytes.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG GetDefaultValue(DWORD *pdwType, BYTE *pbValueDataBuffer, DWORD dwValueDataBufferSize, DWORD *pdwValueDataActualSize);
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// Call this function to get text representation of value type.
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//
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// Parameters:
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// dwType - type to get text representation from.
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//
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// Return value:
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// text representation od value type.
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static const TCHAR * GetValueTypeName(DWORD dwType);
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DWORD GetValue(TCHAR *pchValueName, DWORD *pdwType, LPBYTE lpValueDataBuffer, DWORD *pdwValueDataSize);
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// Call this method to create subkey of this key.
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//
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// Parameters:
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// samDesired - deisred access.
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// pszKeyName - pointer to bufer containing name of key to create.
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// rhKey - reference to variable that receives handle of opened key. If method fails, variable value is unchanged.
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// pblnOpened - optional pointer to variable that receives create/open status. If subkey is opened value is TRUE. If key is created value is FALSE.
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// blnVolatile - opitional parameter specifining if created key is volatile.
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//
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// Return value:
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// If the method succeeds, the return value is ERROR_SUCCESS.
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// If the method fails, the return value is a nonzero error code defined in winerror.h.
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LONG CreateSubkey(REGSAM samDesired, const TCHAR *pszKeyName, HKEY &rhKey, BOOL *pblnOpened = NULL, BOOL blnVolatile = FALSE);
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LONG GetLastWriteTime(SYSTEMTIME& st);
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const TCHAR * GetLastWriteTime();
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LONG DeleteValue(const TCHAR *pszValueName);
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LONG DeleteSubkey(const TCHAR *pszPatternSubkeyName);
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LONG SetValue(LPCTSTR pszValueName, DWORD dwType, BYTE *lpData, DWORD dwDataSize);
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TCHAR * GetSubKeyNameByIndex(DWORD dwIndex);
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LONG GetSecurityDescriptor(SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, LPDWORD lpcbSecurityDescriptor);
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LONG GetSecurityDescriptorLength(DWORD *pdwSecurityDescriptor);
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BOOL IsPredefined();
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operator HKEY(){return m_hKey;};
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private:
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DWORD m_dwCurrentSubKeyIndex;
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TCHAR *m_pchSubkeyNameBuffer;
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DWORD m_dwSubkeyNameBufferSize;
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DWORD m_dwCurrentValueIndex;
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TCHAR *m_pszValueNameBuffer;
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DWORD m_dwValueNameBufferSize;
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BYTE *m_pbValueDataBuffer;
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DWORD m_dwValueDataBufferSize;
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DWORD *m_pdwType;
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HKEY m_hKey;
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TCHAR *m_pszKeyName;
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TCHAR *m_pszMachineName;
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REGSAM m_CurrentAccess;
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};
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#endif // !defined(REGISTRYKEY_H__FEF419ED_6EB6_11D3_907D_204C4F4F5020__INCLUDED_)
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