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'/
'/ A placer sans la partie déclarative
'/
'This code was originally written by Terry Kreft and Dev Ashish.
'It is not to be altered or distributed, except as part of an application.
'You are free to use it in any application, provided the copyright notice is left unchanged.

'
'Code Courtesy of Dev Ashish & Terry Kreft
'
Public Const HKEY_CLASSES_ROOT = &H80000000
Public Const HKEY_CURRENT_USER = &H80000001
Public Const HKEY_LOCAL_MACHINE = &H80000002
Public Const HKEY_USERS = &H80000003
Public Const HKEY_PERFORMANCE_DATA = &H80000004
Public Const HKEY_CURRENT_CONFIG = &H80000005
Public Const HKEY_DYN_DATA = &H80000006

Private Const STANDARD_RIGHTS_READ = &H20000
Private Const KEY_QUERY_VALUE = &H1&
Private Const KEY_ENUMERATE_SUB_KEYS = &H8&
Private Const KEY_NOTIFY = &H10&
Private Const SYNCHRONIZE = &H100000
Private Const KEY_READ = ((STANDARD_RIGHTS_READ Or _
                           KEY_QUERY_VALUE Or _
                           KEY_ENUMERATE_SUB_KEYS Or _
                           KEY_NOTIFY) And _
                           (Not SYNCHRONIZE))
Private Const MAXLEN = 256
Private Const ERROR_SUCCESS = &H0&

Const REG_NONE = 0
Const REG_SZ = 1
Const REG_EXPAND_SZ = 2
Const REG_BINARY = 3
Const REG_DWORD = 4
Const REG_DWORD_LITTLE_ENDIAN = 4
Const REG_DWORD_BIG_ENDIAN = 5
Const REG_LINK = 6
Const REG_MULTI_SZ = 7
Const REG_RESOURCE_LIST = 8

Type FILETIME
    dwLowDateTime As Long
    dwHighDateTime As Long
End Type

Private Declare Function apiRegOpenKeyEx Lib "advapi32.dll" _
                                         Alias "RegOpenKeyExA" ( _
                                         ByVal hKey As Long, _
                                         ByVal lpSubKey As String, ByVal ulOptions As Long, _
                                         ByVal samDesired As Long, ByRef phkResult As Long) _
                                         As Long

Private Declare Function apiRegCloseKey Lib "advapi32.dll" _
                                        Alias "RegCloseKey" ( _
                                        ByVal hKey As Long) As Long

Private Declare Function apiRegQueryValueEx Lib "advapi32.dll" _
                                            Alias "RegQueryValueExA" ( _
                                            ByVal hKey As Long, _
                                            ByVal lpValueName As String, ByVal lpReserved As Long, _
                                            ByRef lpType As Long, lpData As Any, _
                                            ByRef lpcbData As Long) As Long

Private Declare Function apiRegQueryInfoKey Lib "advapi32.dll" _
                                            Alias "RegQueryInfoKeyA" ( _
                                            ByVal hKey As Long, _
                                            ByVal lpClass As String, ByRef lpcbClass As Long, _
                                            ByVal lpReserved As Long, ByRef lpcSubKeys As Long, _
                                            ByRef lpcbMaxSubKeyLen As Long, _
                                            ByRef lpcbMaxClassLen As Long, _
                                            ByRef lpcValues As Long, _
                                            ByRef lpcbMaxValueNameLen As Long, _
                                            ByRef lpcbMaxValueLen As Long, _
                                            ByRef lpcbSecurityDescriptor As Long, _
                                            ByRef lpftLastWriteTime As FILETIME) As Long

Function fReturnRegKeyValue(ByVal lngKeyToGet As Long, _
                            ByVal strKeyName As String, _
                            ByVal strValueName As String) _
                            As String
    Dim lnghKey As Long
    Dim strClassName As String
    Dim lngClassLen As Long
    Dim lngReserved As Long
    Dim lngSubKeys As Long
    Dim lngMaxSubKeyLen As Long
    Dim lngMaxClassLen As Long
    Dim lngValues As Long
    Dim lngMaxValueNameLen As Long
    Dim lngMaxValueLen As Long
    Dim lngSecurity As Long
    Dim ftLastWrite As FILETIME
    Dim lngType As Long
    Dim lngData As Long
    Dim lngTmp As Long
    Dim strRet As String
    Dim varRet As Variant
    Dim lngRet As Long
    On Error GoTo fReturnRegKeyValue_Err

    'Open the key first
    lngTmp = apiRegOpenKeyEx(lngKeyToGet, _
                             strKeyName, 0&, KEY_READ, lnghKey)

    'Are we ok?
    If Not (lngTmp = ERROR_SUCCESS) Then Err.RaiselngTmp vbObjectError

    lngReserved = 0&
    strClassName = String$(MAXLEN, 0): lngClassLen = MAXLEN

    'Get boundary values
    lngTmp = apiRegQueryInfoKey(lnghKey, strClassName, _
                                lngClassLen, lngReserved, _
                                lngSubKeys, lngMaxSubKeyLen, _
                                lngMaxClassLen, lngValues, _
                                lngMaxValueNameLen, lngMaxValueLen, _
                                lngSecurity, ftLastWrite)

    'How we doin?
    If Not (lngTmp = ERROR_SUCCESS) Then Err.RaisengTmp vbObjectError

    'Now grab the value for the key
    strRet = String$(MAXLEN - 1, 0)
    lngTmp = apiRegQueryValueEx(lnghKey, strValueName, _
                                lngReserved, lngType, ByVal strRet, lngData)
    Select Case lngType
    Case REG_SZ
        lngTmp = apiRegQueryValueEx(lnghKey, strValueName, _
                                    lngReserved, lngType, ByVal strRet, lngData)
        varRet = Left(strRet, lngData - 1)
    Case REG_DWORD
        lngTmp = apiRegQueryValueEx(lnghKey, strValueName, _
                                    lngReserved, lngType, lngRet, lngData)
        varRet = lngRet
    Case REG_BINARY
        lngTmp = apiRegQueryValueEx(lnghKey, strValueName, _
                                    lngReserved, lngType, ByVal strRet, lngData)
        varRet = Left(strRet, lngData)
    Case REG_EXPAND_SZ
        lngTmp = apiRegQueryValueEx(lnghKey, strValueName, _
                                    lngReserved, lngType, ByVal strRet, lngData)
        varRet = Left(strRet, lngData)

    End Select

    'All quiet on the western front?
    If Not (lngTmp = ERROR_SUCCESS) Then Err.RaiselngTmp vbObjectError

fReturnRegKeyValue_Exit:
    fReturnRegKeyValue = varRet
    lngTmp = apiRegCloseKey(lnghKey)
    Exit Function

fReturnRegKeyValue_Err:
    varRet = "Error: Key or Value Not Found."
    Resume fReturnRegKeyValue_Exit
End Function


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