Private Declare Function RegOpenKeyEx Lib "advapi32.dll" Alias "RegOpenKeyExA" _ (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, _ ByVal samDesired As Long, phkResult As Long) As LongPrivate Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As _ LongPrivate Declare Function RegEnumValue Lib "advapi32.dll" Alias "RegEnumValueA" _ (ByVal hKey As Long, ByVal dwIndex As Long, ByVal lpValueName As String, _ lpcbValueName As Long, ByVal lpReserved As Long, lpType As Long, _ lpData As Any, lpcbData As Long) As LongPrivate Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (dest As _ Any, source As Any, ByVal numBytes As Long)Const REG_SZ = 1Const REG_EXPAND_SZ = 2Const REG_BINARY = 3Const REG_DWORD = 4Const REG_MULTI_SZ = 7Const ERROR_MORE_DATA = 234Const KEY_READ = &H20019 ' ((READ_CONTROL Or KEY_QUERY_VALUE Or ' KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY) And (Not ' SYNCHRONIZE))' Enumerate values under a given registry key'' returns a collection, where each element of the collection' is a 2-element array of Variants:' element(0) is the value name, element(1) is the value's valueFunction EnumRegistryValues(ByVal hKey As Long, ByVal KeyName As String) As _ Collection Dim handle As Long Dim index As Long Dim valueType As Long Dim name As String Dim nameLen As Long Dim resLong As Long Dim resString As String Dim dataLen As Long Dim valueInfo(0 To 1) As Variant Dim retVal As Long ' initialize the result Set EnumRegistryValues = New Collection ' Open the key, exit if not found. If Len(KeyName) Then If RegOpenKeyEx(hKey, KeyName, 0, KEY_READ, handle) Then Exit Function ' in all cases, subsequent functions use hKey hKey = handle End If Do ' this is the max length for a key name nameLen = 260 name = Space$(nameLen) ' prepare the receiving buffer for the value dataLen = 4096 ReDim resBinary(0 To dataLen - 1) As Byte ' read the value's name and data ' exit the loop if not found retVal = RegEnumValue(hKey, index, name, nameLen, ByVal 0&, valueType, _ resBinary(0), dataLen) ' enlarge the buffer if you need more space If retVal = ERROR_MORE_DATA Then ReDim resBinary(0 To dataLen - 1) As Byte retVal = RegEnumValue(hKey, index, name, nameLen, ByVal 0&, _ valueType, resBinary(0), dataLen) End If ' exit the loop if any other error (typically, no more values) If retVal Then Exit Do ' retrieve the value's name valueInfo(0) = Left$(name, nameLen) ' return a value corresponding to the value type Select Case valueType Case REG_DWORD CopyMemory resLong, resBinary(0), 4 valueInfo(1) = resLong Case REG_SZ, REG_EXPAND_SZ ' copy everything but the trailing null char resString = Space$(dataLen - 1) CopyMemory ByVal resString, resBinary(0), dataLen - 1 valueInfo(1) = resString Case REG_BINARY ' shrink the buffer if necessary If dataLen < UBound(resBinary) + 1 Then ReDim Preserve resBinary(0 To dataLen - 1) As Byte End If valueInfo(1) = resBinary() Case REG_MULTI_SZ ' copy everything but the 2 trailing null chars resString = Space$(dataLen - 2) CopyMemory ByVal resString, resBinary(0), dataLen - 2 valueInfo(1) = resString Case Else ' Unsupported value type - do nothing End Select ' add the array to the result collection ' the element's key is the value's name EnumRegistryValues.Add valueInfo, valueInfo(0) index = index + 1 Loop ' Close the key, if it was actually opened If handle Then RegCloseKey handle End Function


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