vb中如何将form1 设置成总在掐他窗口前面？

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 Sub Form_Load()
SetWindowPos Me.hwnd, -1, 0, 0, 0, 0, 2 Or 1 '窗口置顶
End Sub