Option Explicit
'Declaraciones para 32 bits
Public Declare Function GetPrivateProfileString Lib "Kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As Any, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Long, ByVal lpFileName As String) As Long
Public Declare Function WritePrivateProfileString Lib "Kernel32" Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As Any, ByVal lpString As Any, ByVal lpFileName As String) As Long

Public Function LeerIni(lpFileName As String, lpAppName As String, lpKeyName As String, Optional vDefault) As String
'Los parámetros son:
'lpFileName: La Aplicación (fichero INI)
'lpAppName: La sección que suele estar entrre corchetes
'lpKeyName: Clave
'vDefault: Valor opcional que devolverá
' si no se encuentra la clave.
'
Dim lpString As String
Dim LTmp As Long
Dim sRetVal As String

'Si no se especifica el valor por defecto,
'asignar incialmente una cadena vacía
If IsMissing(vDefault) Then
lpString = ""
Else
lpString = vDefault
End If

sRetVal = String$(255, 0)

LTmp = GetPrivateProfileString(lpAppName, lpKeyName, lpString, _
sRetVal, Len(sRetVal), lpFileName)
If LTmp = 0 Then
LeerIni = lpString
Else
LeerIni = Left(sRetVal, LTmp)
End If
End Function

Public Sub GuardarIni(lpFileName As String, lpAppName As String, lpKeyName As _
String, lpString As String)
'Guarda los datos de configuración
'Los parámetros son los mismos que en LeerIni
'Siendo lpString el valor a guardar
'
Dim LTmp As Long

LTmp = WritePrivateProfileString(lpAppName, lpKeyName, lpString, _
lpFileName)
End Sub