Adding to a key in the registry

how can I add a value?
I googled it and the best I found was on the msdn (but that told me how to make a key...) Please and thanks.

You can use this:

Code:

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SaveSetting app.name, section, Key, Setting

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use

GetSetting ...

to read it back.

Here you go :)

Code:

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'Put this under a command button
WriteRegistry HKEY_CURRENT_USER, "SOFTWARE\MyApp\", "Start", ValString, "YourValue"

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And put the below into a module.

Code:

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' Possible registry data types
Public Enum InTypes
  ValNull = 0
  ValString = 1
  ValXString = 2
  ValBinary = 3
  ValDWord = 4
  ValLink = 6
  ValMultiString = 7
  ValResList = 8
End Enum
' Registry value type definitions
Public Const REG_NONE As Long = 0
Public Const REG_SZ As Long = 1
Public Const REG_EXPAND_SZ As Long = 2
Public Const REG_BINARY As Long = 3
Public Const REG_DWORD As Long = 4
Public Const REG_LINK As Long = 6
Public Const REG_MULTI_SZ As Long = 7
Public Const REG_RESOURCE_LIST As Long = 8
' Registry section definitions
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
' Codes returned by Reg API calls
Private Const ERROR_NONE = 0
Private Const ERROR_BADDB = 1
Private Const ERROR_BADKEY = 2
Private Const ERROR_CANTOPEN = 3
Private Const ERROR_CANTREAD = 4
Private Const ERROR_CANTWRITE = 5
Private Const ERROR_OUTOFMEMORY = 6
Private Const ERROR_INVALID_PARAMETER = 7
Private Const ERROR_ACCESS_DENIED = 8
Private Const ERROR_INVALID_PARAMETERS = 87
Private Const ERROR_NO_MORE_ITEMS = 259

Private Declare Function RegOpenKey Lib "advapi32.dll" Alias "RegOpenKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, phkResult As Long) As Long
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 Long
Private Declare Function RegQueryValueEx Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, ByVal lpData As String, lpcbData As Long) As Long
Private 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, ByVal lpData As String, lpcbData As Long) As Long
Private Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long
Private Declare Function RegCreateKey Lib "advapi32.dll" Alias "RegCreateKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, phkResult As Long) As Long
Private Declare Function RegSetValueExString Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByVal lpValue As String, ByVal cbData As Long) As Long
Private Declare Function RegSetValueExLong Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpValue As Long, ByVal cbData As Long) As Long
Private Declare Function RegFlushKey Lib "advapi32.dll" (ByVal hKey As Long) As Long
Private Declare Function RegEnumKey Lib "advapi32.dll" Alias "RegEnumKeyA" (ByVal hKey As Long, ByVal dwIndex As Long, ByVal lpName As String, ByVal cbName As Long) As Long
Private Declare Function RegDeleteKey Lib "advapi32.dll" Alias "RegDeleteKeyA" (ByVal hKey As Long, ByVal lpSubKey As String) As Long
Private Declare Function RegDeleteValue Lib "advapi32.dll" Alias "RegDeleteValueA" (ByVal hKey As Long, ByVal lpValueName As String) As Long

' This routine allows you to get values from anywhere in the Registry, it currently
' only handles string and double word values.
'
' Example
' Text1.Text = ReadRegistry(HKEY_LOCAL_MACHINE, "SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\", "DefaultUserName")
'
Public Function ReadRegistry(ByVal Group As Long, ByVal Section As String, ByVal Key As String) As String
Dim lResult As Long, lKeyValue As Long, lDataTypeValue As Long, lValueLength As Long, sValue As String, td As Double
On Error Resume Next
lResult = RegOpenKey(Group, Section, lKeyValue)
sValue = Space$(2048)
lValueLength = Len(sValue)
lResult = RegQueryValueEx(lKeyValue, Key, 0&, lDataTypeValue, sValue, lValueLength)
If (lResult = 0) And (Err.Number = 0) Then
  If lDataTypeValue = REG_DWORD Then
      td = Asc(Mid$(sValue, 1, 1)) + &H100& * Asc(Mid$(sValue, 2, 1)) + &H10000 * Asc(Mid$(sValue, 3, 1)) + &H1000000 * CDbl(Asc(Mid$(sValue, 4, 1)))
      sValue = Format$(td, "000")
  End If
  sValue = Left$(sValue, lValueLength - 1)
Else
  sValue = ""
End If
lResult = RegCloseKey(lKeyValue)
ReadRegistry = sValue


End Function

' This routine allows you to write values into the entire Registry, it currently
' only handles string and double word values.
'
' Example
' WriteRegistry HKEY_CURRENT_USER, "SOFTWARE\My Name\My App\", "NewSubKey", ValString, "NewValueHere"
' WriteRegistry HKEY_CURRENT_USER, "SOFTWARE\My Name\My App\", "NewSubKey", ValDWord, "31"
'
Public Sub WriteRegistry(ByVal Group As Long, ByVal Section As String, ByVal Key As String, ByVal ValType As InTypes, ByVal Value As Variant)
Dim lResult As Long
Dim lKeyValue As Long
Dim InLen As Long
Dim lNewVal As Long
Dim sNewVal As String
On Error Resume Next
lResult = RegCreateKey(Group, Section, lKeyValue)
If ValType = ValDWord Then
  lNewVal = CLng(Value)
  InLen = 4
  lResult = RegSetValueExLong(lKeyValue, Key, 0&, ValType, lNewVal, InLen)
Else
  sNewVal = Value
  InLen = Len(sNewVal)
  lResult = RegSetValueExString(lKeyValue, Key, 0&, 1&, sNewVal, InLen)
End If
lResult = RegFlushKey(lKeyValue)
lResult = RegCloseKey(lKeyValue)
End Sub

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And last but not least.....to read from the registry put the below under a command button.

Code:

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ReadRegistry(HKEY_CURRENT_USER, "Software\MyApp\", "Start")

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Get/Save Settings only let you access the registry values associated with your app. If you need full access to the registry, you need something else.

Hey thanks all, so how do I get full accsess?

Use my code. It will allow you to read/write any value in the registry :)

There's a very nifty class module on Planetsourcecode.com which makes life very easy indeed.

Thanks all.

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if your question has been answered satisfactorily.

C:\My Documents\Visual Studio Projects\Valo-Ohjain\Form1.vb(152): Name 'SaveSetting' is not declared.


I'm just starting with VB.NET and I'm not familiar with it at all. I get the above error when I try to use SaveSettings. So how do I declare it? The help for declare functions only seems to talk about self written functions.


Edit: And now I realized the search came up with threads outside VB.NET area, though I used it there :blush: