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Thread: Registry problems

  1. #1
    Guest
    Here is a registry code that should work.

    Code for a Module
    Code:
    Declare Function RegCloseKey Lib "advapi32.dll" (ByVal HKEY As Long) As Long
    Declare Function RegCreateKey Lib "advapi32.dll" Alias "RegCreateKeyA" (ByVal HKEY As Long, ByVal lpSubKey As String, phkResult As Long) As Long
    Declare Function RegDeleteKey Lib "advapi32.dll" Alias "RegDeleteKeyA" (ByVal HKEY As Long, ByVal lpSubKey As String) As Long
    Declare Function RegDeleteValue Lib "advapi32.dll" Alias "RegDeleteValueA" (ByVal HKEY As Long, ByVal lpValueName As String) As Long
    Declare Function RegOpenKey Lib "advapi32.dll" Alias "RegOpenKeyA" (ByVal HKEY As Long, ByVal lpSubKey As String, phkResult As Long) As Long
    Declare Function RegQueryValueEx Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal HKEY As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, lpData As Any, lpcbData As Long) As Long
    Declare Function RegSetValueEx Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal HKEY As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpData As Any, ByVal cbData As Long) As Long
    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 REG_SZ = 1
    
    Function RegQueryStringValue(ByVal HKEY As Long, ByVal strValueName As String)
        Dim lResult As Long
        Dim lValueType As Long
        Dim strBuf As String
        Dim lDataBufSize As Long
        
        On Error GoTo 0
        lResult = RegQueryValueEx(HKEY, strValueName, 0&, lValueType, ByVal 0&, lDataBufSize)
        If lResult = ERROR_SUCCESS Then
            If lValueType = REG_SZ Then
                strBuf = String(lDataBufSize, " ")
                lResult = RegQueryValueEx(HKEY, strValueName, 0&, 0&, ByVal strBuf, lDataBufSize)
                If lResult = ERROR_SUCCESS Then
                    RegQueryStringValue = StripTerminator(strBuf)
                End If
            End If
        End If
    End Function
    
    Public Function GetSettingEx(HKEY As Long, sPath As String, sValue As String)
        Dim KeyHand&
        Dim datatype&
        Call RegOpenKey(HKEY, sPath, KeyHand&)
        GetSettingEx = RegQueryStringValue(KeyHand&, sValue)
        Call RegCloseKey(KeyHand&)
    End Function
    
    Function StripTerminator(ByVal strString As String) As String
        Dim intZeroPos As Integer
    
        intZeroPos = InStr(strString, Chr$(0))
        If intZeroPos > 0 Then
            StripTerminator = Left$(strString, intZeroPos - 1)
        Else
            StripTerminator = strString
        End If
    End Function
    
    Public Sub SaveSettingEx(HKEY As Long, sPath As String, sValue As String, sData As String)
        Dim KeyHand As Long
        Call RegCreateKey(HKEY, sPath, KeyHand)
        Call RegSetValueEx(KeyHand&, sValue, 0, REG_SZ, ByVal sData, Len(sData))
        Call RegCloseKey(KeyHand&)
    End Sub
    Usage:

    Code:
    Private Sub Command1_Click()
        'Save a Value to the Registry
        SaveSettingEx HKEY_CURRENT_USER, "Software\Myapp", "Testing", "Hello"
    End Sub
    
    Private Sub Command2_Click()
        'Get a value from the Registry
        Retval = GetSettingEx(HKEY_CURRENT_USER, "Software\Myapp", "Testing")
        Print Retval
    End Sub

  2. #2
    transcendental analytic kedaman's Avatar
    Join Date
    Mar 2000
    Location
    0x002F2EA8
    Posts
    7,221
    Code:
    Public Function GetSettingLong(ByVal hKey As Long, ByVal strPath As String, ByVal strValue As String, Optional Default As Long) As Long
    Note your function requires 3 arguments + 1 optional

    hkey is the root key constant
    path is the path your value is located in
    strvalue is the value name
    default (i'm not sure, guessing) is the return value if the value doesn't exist. May also be a boolean you specify if you want to return the default key value.
    So you would have to do it like this:
    Code:
    Label1.Caption = GetSettingLong(HKEY_USERS, "Default\software\Dir\bludecd\userinfo" , "Password")
    If you want, you could also search for my registry module on my homepage, it has a lot more features.

    [Edited by kedaman on 09-13-2000 at 08:44 AM]
    Use
    writing software in C++ is like driving rivets into steel beam with a toothpick.
    writing haskell makes your life easier:
    reverse (p (6*9)) where p x|x==0=""|True=chr (48+z): p y where (y,z)=divMod x 13
    To throw away OOP for low level languages is myopia, to keep OOP is hyperopia. To throw away OOP for a high level language is insight.

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