Write a value from the Windows Registry : Registry « Windows API « VBA / Excel / Access / Word






  1. VBA / Excel / Access / Word
  2. Windows API
  3. Registry

Write a value from the Windows Registry

 

Private Declare Function RegOpenKeyA Lib "ADVAPI32.DLL" (ByVal hKey As Long, ByVal sSubKey As String, ByRef hkeyResult As Long) As Long
Private Declare Function RegCloseKey Lib "ADVAPI32.DLL" (ByVal hKey As Long) As Long
Private Declare Function RegSetValueExA Lib "ADVAPI32.DLL" (ByVal hKey As Long, ByVal sValueName As String, ByVal dwReserved As Long, ByVal dwType As Long, ByVal sValue As String, ByVal dwSize As Long) As Long
Private Declare Function RegCreateKeyA Lib "ADVAPI32.DLL" (ByVal hKey As Long, ByVal sSubKey As String, ByRef hkeyResult As Long) As Long
Private Declare Function RegQueryValueExA Lib "ADVAPI32.DLL" (ByVal hKey As Long, ByVal sValueName As String, ByVal dwReserved As Long, ByRef lValueType As Long, ByVal sValue As String, ByRef lResultLen As Long) As Long

Function GetRegistry(Key, Path, ByVal ValueName As String)
    Dim hKey As Long
    Dim lValueType As Long
    Dim sResult As String
    Dim lResultLen As Long
    Dim ResultLen As Long
    Dim x, TheKey As Long

    TheKey = -99
    Select Case UCase(Key)
        Case "HKEY_CLASSES_ROOT": TheKey = &H80000000
        Case "HKEY_CURRENT_USER": TheKey = &H80000001
        Case "HKEY_LOCAL_MACHINE": TheKey = &H80000002
        Case "HKEY_USERS": TheKey = &H80000003
        Case "HKEY_CURRENT_CONFIG": TheKey = &H80000004
        Case "HKEY_DYN_DATA": TheKey = &H80000005
    End Select
    
    If TheKey = -99 Then
        GetRegistry = "Not Found"
        Exit Function
    End If

    If RegOpenKeyA(TheKey, Path, hKey) <> 0 Then _
        x = RegCreateKeyA(TheKey, Path, hKey)
    
    sResult = Space(100)
    lResultLen = 100
    
    x = RegQueryValueExA(hKey, ValueName, 0, lValueType, _
    sResult, lResultLen)
        
    Select Case x
        Case 0: GetRegistry = Left(sResult, lResultLen - 1)
        Case Else: GetRegistry = "Not Found"
    End Select
    
    RegCloseKey hKey
End Function

Private Function WriteRegistry(ByVal Key As String, _
    ByVal Path As String, ByVal entry As String, _
    ByVal value As String)
    
    Dim hKey As Long
    Dim lValueType As Long
    Dim sResult As String
    Dim lResultLen As Long
   
    TheKey = -99
    Select Case UCase(Key)
        Case "HKEY_CLASSES_ROOT": TheKey = &H80000000
        Case "HKEY_CURRENT_USER": TheKey = &H80000001
        Case "HKEY_LOCAL_MACHINE": TheKey = &H80000002
        Case "HKEY_USERS": TheKey = &H80000003
        Case "HKEY_CURRENT_CONFIG": TheKey = &H80000004
        Case "HKEY_DYN_DATA": TheKey = &H80000005
    End Select
    
    If TheKey = -99 Then
        WriteRegistry = False
        Exit Function
    End If

    If RegOpenKeyA(TheKey, Path, hKey) <> 0 Then
        x = RegCreateKeyA(TheKey, Path, hKey)
    End If

    x = RegSetValueExA(hKey, entry, 0, 1, value, Len(value) + 1)
    If x = 0 Then WriteRegistry = True Else WriteRegistry = False
End Function


Sub UpdateRegistryWithTime()
    RootKey = "hkey_current_user"
    Path = "software\microsoft\office\9.0\excel\LastStarted"
    RegEntry = "DateTime"
    RegVal = Now()
    LastTime = GetRegistry(RootKey, Path, RegEntry)
    Debug.Print LastTime
    
    Call WriteRegistry(RootKey, Path, RegEntry, RegVal)
End Sub








Related examples in the same category

1.Working with the Registry Using the VBA Registry Functions
2.Reads a value from the Windows Registry
3.Using RegQueryValueEx to Read Registry Information
4.Using RegSetValueEx to Write Information to the Registry