Inicio de Aplicación con Windows

Este es un módulo bas que sirve para que nuestra aplicación se inicie junto con Windows, no es nada novedoso, modifica las claves del registro mediante Apis.
Cuenta con dos funciones:
– SetAutoRun: Con un parámetro Boolean, si éste es verdadero ancla nuestra aplicación al inicio, de lo contrario la quita, la función debería retornarnos un valor verdadero si es que todo salió bien.
– IsAutoRun: Devuelve «true» si nuestra aplicación ya está en el inicio

Option Explicit

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 RegCloseKey Lib "advapi32.dll" (ByVal hKey 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 RegDeleteKey& Lib "advapi32.dll" Alias "RegDeleteKeyA" (ByVal hKey As Long, ByVal lpSubKey As String)
Private Declare Function RegQueryValueExNULL Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, ByVal lpData As Long, lpcbData As Long) As Long
Private Declare Function RegQueryValueExString 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 RegDeleteValue& Lib "advapi32.dll" Alias "RegDeleteValueA" (ByVal hKey As Long, ByVal lpValueName As String)

Private Const RAMA_RUN_WINDOWS As String = "SOFTWARE\Microsoft\Windows\CurrentVersion\Run"
Private Const HKEY_CLASSES_ROOT = &H80000000
Private Const HKEY_CURRENT_USER = &H80000001
Private Const HKEY_LOCAL_MACHINE = &H80000002
Private Const HKEY_USERS = &H80000003
Private Const REG_SZ As Long = 1
Private Const KEY_ALL_ACCESS = &H3F

Public Function SetAutoRun(Value As Boolean) As Boolean 
    Dim Path          As String
    Dim Handle        As Long 
    Path = Chr(34) & App.Path & "\" & App.EXEName & ".exe" & Chr(34) 
    RegOpenKeyEx HKEY_CURRENT_USER, RAMA_RUN_WINDOWS, 0, KEY_ALL_ACCESS, Handle
    If Value Then
        SetAutoRun = RegSetValueExString(Handle, App.Title, 0&, REG_SZ, Path, Len(Path)) = 0
    Else
        SetAutoRun = RegDeleteValue(Handle, App.Title) = 0
    End If
    RegCloseKey Handle 
End Function

Public Function IsAutoRun() As Boolean 
    Dim Path          As String
    Dim Handle        As Long
    Dim Data          As String
    Dim cch           As Long 
    Path = Chr(34) & App.Path & "\" & App.EXEName & ".exe" & Chr(34) 
    RegOpenKeyEx HKEY_CURRENT_USER, RAMA_RUN_WINDOWS, 0, KEY_ALL_ACCESS, Handle
    RegQueryValueExNULL Handle, App.Title, 0&, 0&, 0&, cch

    If cch > 0 Then
        Data = String(cch - 1, 0)
        RegQueryValueExString Handle, App.Title, 0&, 0&, Data, cch
        IsAutoRun = Path = Data
    End If 
    RegCloseKey Handle 

End Function