README.md

Description

How to Read and Write to the Registry using all HKEYS

More Info

Submitted On
By	Agent Smith
Level	Intermediate
User Rating	4.2 (92 globes from 22 users)
Compatibility	VB 5.0, VB 6.0
Category	Registry
World	Visual Basic
Archive File

API Declarations

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
Declare Function RegOpenKeyEx Lib "advapi32" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, phkResult As Long) As Long
Declare Function RegSetValueEx Lib "advapi32" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByVal szData As String, ByVal cbData As Long) As Long
Declare Function RegCloseKey Lib "advapi32" (ByVal hKey As Long) As Long
Declare Function RegCreateKeyEx Lib "advapi32" Alias "RegCreateKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal Reserved As Long, ByVal lpClass As String, ByVal dwOptions As Long, ByVal samDesired As Long, lpSecurityAttributes As SECURITY_ATTRIBUTES, phkResult As Long, lpdwDisposition As Long) As Long
#If Win32 Then
 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 KEY_ALL_ACCESS = &H3F
 Public Const REG_OPTION_NON_VOLATILE = 0&
 Public Const REG_CREATED_NEW_KEY = &H1
 Public Const REG_OPENED_EXISTING_KEY = &H2
 Public Const ERROR_SUCCESS = 0&
 Public Const REG_SZ = (1)
#End If
Type SECURITY_ATTRIBUTES
 nLength As Long
 lpSecurityDescriptor As Long
 bInheritHandle As Boolean
End Type

Source Code

Public Function bSetRegValue(ByVal hKey As Long, ByVal lpszSubKey As String, ByVal sSetValue As String, ByVal sValue As String) As Boolean
 On Error Resume Next
 Dim phkResult As Long
 Dim lResult As Long
 Dim SA As SECURITY_ATTRIBUTES
 Dim lCreate As Long
 RegCreateKeyEx hKey, lpszSubKey, 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, SA, phkResult, lCreate
 lResult = RegSetValueEx(phkResult, sSetValue, 0, REG_SZ, sValue, CLng(Len(sValue) + 1))
 RegCloseKey phkResult
 bSetRegValue = (lResult = ERROR_SUCCESS)
End Function
Public Function bGetRegValue(ByVal hKey As Long, ByVal sKey As String, ByVal sSubKey As String) As String
 Dim lResult As Long
 Dim phkResult As Long
 Dim dWReserved As Long
 Dim szBuffer As String
 Dim lBuffSize As Long
 Dim szBuffer2 As String
 Dim lBuffSize2 As Long
 Dim lIndex As Long
 Dim lType As Long
 Dim sCompKey As String
 lIndex = 0
 lResult = RegOpenKeyEx(hKey, sKey, 0, 1, phkResult)
 Do While lResult = ERROR_SUCCESS And Not (bFound)
  szBuffer = Space(255)
  lBuffSize = Len(szBuffer)
  szBuffer2 = Space(255)
  lBuffSize2 = Len(szBuffer2)
  lResult = RegEnumValue(phkResult, lIndex, szBuffer, lBuffSize, dWReserved, lType, szBuffer2, lBuffSize2)
  If (lResult = ERROR_SUCCESS) Then
   sCompKey = Left(szBuffer, lBuffSize)
   If (sCompKey = sSubKey) Then
    bGetRegValue = Left(szBuffer2, lBuffSize2 - 1)
   End If
  End If
  lIndex = lIndex + 1
 Loop
 RegCloseKey phkResult
End Function