تشغيل شاشة التوقف

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, _
ByVal wMsg As Long, _
ByVal wParam As Long, _
ByVal lParam As Long) As Long
Private Const WM_SYSCOMMAND = &H112&
Private Const SC_SCREENSAVE = &HF140&

Private Sub Command1_Click()

Dim Res As Long
Res = SendMessage(Me.hWnd, WM_SYSCOMMAND, SC_SCREENSAVE, 0&)

End Sub