如何让一个VB窗口总是处于各窗口的最上层

代码如下:
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 & _
   
　 Const HWND_TOPMOST = -1
Private Sub Form_Load() 
   　   
SetWindowPos Me.hwnd,HWND_TOPMOST,Me.Left/Screen.TwipsPerPixelX,
_
              Me.Top\Screen.TwipsPerPixelY,Me.Width\Screen.TwipsPerPixelX,
_ 
    　　 Form1.Height \ Screen.TwipsPerPixelY, 0 
End Sub