by Louis (2 Submissions)
Category: Windows System Services
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Sat 7th May 2005
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Code to get a program to run at startup
API Declarations
' The exe file must exist for this to work properly.
' The exe file must exist for this to work properly.
' The exe file must exist for this to work properly.
' The exe file must exist for this to work properly.
Private Declare Function RegCreateKeyEx Lib "advapi32.dll" 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, ByVal lpSecurityAttributes As Long, phkResult As Long, lpdwDisposition As Long) As Long
Private Declare Function RegSetValueEx Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpData As Any, ByVal cbData As Long)
As Long ' Note that if you declare the lpData parameter as String, you must pass it By Value.
Private Declare Function RegDeleteValue Lib "advapi32.dll" Alias "RegDeleteValueA" (ByVal hKey As Long, ByVal lpValueName As String) As Long
Private Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey 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, lpData As Any, lpcbData As Long) As Long ' Note that if you declare the lpData parameter as String, you must pass it By Value.
Private Const READ_CONTROL = &H20000
Private Const KEY_SET_VALUE = &H2
Private Const KEY_CREATE_SUB_KEY = &H4
Private Const STANDARD_RIGHTS_WRITE = (READ_CONTROL)
Private Const SYNCHRONIZE = &H100000
Private Const KEY_WRITE = ((STANDARD_RIGHTS_WRITE Or KEY_SET_VALUE Or KEY_CREATE_SUB_KEY) And (Not SYNCHRONIZE))
Private Const STANDARD_RIGHTS_READ = (READ_CONTROL)
Private Const KEY_ENUMERATE_SUB_KEYS = &H8
Private Const KEY_NOTIFY = &H10
Private Const KEY_QUERY_VALUE = &H1
Private Const KEY_READ = ((STANDARD_RIGHTS_READ Or KEY_QUERY_VALUE Or KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY) And (Not SYNCHRONIZE))
Private Const ERROR_SUCCESS = 0&
Private Const HKEY_CURRENT_USER = &H80000001
Private Const REG_SZ = 1
Private m_IgnoreEvents As Boolean
VBcoders
Dim hKey As Long
Dim key_value As String
Dim status As Long
On Error GoTo SetStartupError
' Open the key, creating it if it doesn't exist.
If RegCreateKeyEx(HKEY_CURRENT_USER, _
"Software\Microsoft\Windows\CurrentVersion\Run", _
ByVal 0&, ByVal 0&, ByVal 0&, _
KEY_WRITE, ByVal 0&, hKey, _
ByVal 0&) <> ERROR_SUCCESS _
Then
MsgBox "Error " & Err.Number & " opening key" & _
vbCrLf & Err.Description
Exit Sub
End If
' See if we should run at startup.
If run_at_startup Then
' Create the key.
key_value = app_path & "\" & app_name & ".exe" & vbNullChar
status = RegSetValueEx(hKey, App.EXEName, 0, REG_SZ, _
ByVal key_value, Len(key_value))
If status <> ERROR_SUCCESS Then
MsgBox "Error " & Err.Number & " setting key" & _
vbCrLf & Err.Description
End If
Else
' Delete the value.
RegDeleteValue hKey, app_name
End If
' Close the key.
RegCloseKey hKey
Exit Sub
SetStartupError:
MsgBox Err.Number & " " & Err.Description
Exit Sub
End Sub
' Return True if the program is set to run at startup.
Private Function WillRunAtStartup(ByVal app_name As String) As Boolean
Dim hKey As Long
Dim value_type As Long
' See if the key exists.
If RegOpenKeyEx(HKEY_CURRENT_USER, _
"Software\Microsoft\Windows\CurrentVersion\Run", _
0, KEY_READ, hKey) = ERROR_SUCCESS _
Then
' Look for the subkey named after the application.
WillRunAtStartup = _
(RegQueryValueEx(hKey, app_name, _
ByVal 0&, value_type, ByVal 0&, ByVal 0&) = _
ERROR_SUCCESS)
' Close the registry key handle.
RegCloseKey hKey
Else
' Can't find the key.
WillRunAtStartup = False
End If
End Function
' Clear or set the key that makes the program run at startup.
Private Sub chkRun_Click()
' If m_IgnoreEvents Then Exit Sub
' SetRunAtStartup App.EXEName, App.Path, _
' (chkRun.Value = vbChecked)
End Sub
Private Sub Form_Click()
End
End Sub
Private Sub Form_Load()
If m_IgnoreEvents Then Exit Sub
SetRunAtStartup App.EXEName, App.Path
m_IgnoreEvents = True
WillRunAtStartup (App.EXEName)
m_IgnoreEvents = False
End Sub