Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

Const WM_SYSCOMMAND = &H112&

Const SC_MONITORPOWER = &HF170&

Private Sub Form_Load()

SendMessage Me.hwnd, WM_SYSCOMMAND, SC_MONITORPOWER, ByVal 2&

End Sub