先呼叫API函式實現窗體總在最上，程式碼如下：
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()
"總在最上
SetWindowPos Me.hwnd, HWND_TOPMOST, Me.Left / Screen.TwipsPerPixelX _
, Me.Top \ Screen.TwipsPerPixelY, Me.Width \ Screen.TwipsPerPixelX, _
Me.Height \ Screen.TwipsPerPixelY, 0
End Sub
然後在顯示這個窗體時用模態，例如：
假設上面的窗體為Form1
Form1.Show vbModal
這樣窗體不僅會在最上，而且必須輸入正確的密碼才能訪問別的窗體
先呼叫API函式實現窗體總在最上，程式碼如下：
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()
"總在最上
SetWindowPos Me.hwnd, HWND_TOPMOST, Me.Left / Screen.TwipsPerPixelX _
, Me.Top \ Screen.TwipsPerPixelY, Me.Width \ Screen.TwipsPerPixelX, _
Me.Height \ Screen.TwipsPerPixelY, 0
End Sub
然後在顯示這個窗體時用模態，例如：
假設上面的窗體為Form1
Form1.Show vbModal
這樣窗體不僅會在最上，而且必須輸入正確的密碼才能訪問別的窗體