' benötigte API-Deklaration
Private Declare Function FindWindow Lib "user32" _
  Alias "FindWindowA" ( _
  ByVal lpClassName As String, _
  ByVal lpWindowName As String) As Long
 
' benötigte API-Deklaration
Private Declare Function ShowWindow Lib "user32" ( _
  ByVal hwnd As Long, _
  ByVal nCmdShow As Long) As Long
 
' Fensterhandle anhand des Fenstertitels ermitteln
    Dim lhWnd As Long
    Dim sTitle As String
 
Private Declare Function SetWindowPos Lib "user32" _
  (ByVal hwnd As Long, _
  ByVal hWndInsertAfter As Long, ByVal x As Long, _
  ByVal y As Long, ByVal cx As Long, _
  ByVal cy As Long, ByVal wFlags As Long) As Long
 
Private Const HWND_TOPMOST = -1
Private Const HWND_NOTOPMOST = -2
Private Const SWP_NOMOVE = &H2
Private Const SWP_NOSIZE = &H1
 
Private Sub Form_Load()
    TopWindow Me.hwnd
End Sub
 
Public Sub TopWindow(hwnd As Long)
  SetWindowPos hwnd, HWND_TOPMOST, 0, 0, 0, 0, _
    SWP_NOSIZE + SWP_NOMOVE
End Sub
 
Private Sub Timer1_Timer()
  Call TopWindow(Me.hwnd)
End Sub