Read and write INI file Custom function (VB)

function Private Declare function getprivateprofileint Lib "kernel32" Alias "Getprivateprofileinta" (ByVal Lpapplicationname as String, ByVal Lpkeyname as String, ByVal Ndefault as Long, ByVal lpFileName as String) as Long
Private Declare Function getprivateprofilestring Lib "kernel32" Alias "Getprivateprofilestringa" (ByVal Lpapplicationname As String, ByVal lpkeyname as any, ByVal Lpdefault as String, ByVal lpreturnedstring as String, ByVal NS Ize as Long, ByVal lpFileName as String) as Long
Private 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
Private Declare Function getwindowsdirectory Lib "kernel32" Alias "Getwindowsdirectorya" (ByVal lpbuffer as String, ByVal Nsize as long) as long

' Write INI file (string)
Public Sub Writeini (ByVal FileName As String, ByVal App as String, ByVal Key as String, ByVal strvalue as String)
Dim result as Long
result = WritePrivateProfileString (App, Key, strvalue, FileName)
End Sub
' Read integral type
Public Function Getiniint (ByVal FileName As String, ByVal App as String, ByVal Key as String) as Long
Dim result as Long
result = Getprivateprofileint (App, Key, 0, FileName)
Getiniint = result
End Function
' Read string
Public Function getinistr (ByVal FileName As String, ByVal App as String, ByVal Key as String) as String
Dim result as Long
Dim Bufferstr as String * 255
result = GetPrivateProfileString (App, Key, "", Bufferstr, Len (BUFFERSTR), FileName)
If result = 0 Then
Getinistr = ""
Else
Getinistr = Left (bufferstr, result)
End If
End Function