VB编程技巧:让窗口一直在上面
时 间:2008-05-15 08:11:43
作 者:UMVSOFT整理 ID:16 城市:江阴
摘 要:VB编程技巧:让窗口一直在上面
正 文:
让窗口一直在上面 '很多流行软件都有这样一个选项:Always on Top。它可以让窗口在最上面,别的窗口不能覆盖它。我们在VB 中,可以使用下面的方法来实现: Private Const SWP_NOSIZE = &H1 Private Const SWP_NOMOVE = &H2 Private Const SWP_NOZORDER = &H4 Private Const SWP_NOREDRAW = &H8 Private Const SWP_NOACTIVATE = &H10 Private Const SWP_FRAMECHANGED = &H20 Private Const SWP_SHOWWINDOW = &H40 Private Const SWP_NOCOPYBITS = &H80 Private Const SWP_NOOWNERZORDER = &H200 Private Const SWP_DRAWFRAME = SWP_FRAMECHANGED Private Const SWP_NOREPOSITION = SWP_NOOWNERZORDER Private Const HWND_TOP = 0 Private Const HWND_BOTTOM = 1 Private Const HWND_TOPMOST = -1 Private Const HWND_NOTOPMOST = -2 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 mbOnTop As Boolean Private Property Let OnTop(Setting As Boolean) If Setting Then SetWindowPos hwnd, -1, 0, 0, 0, 0, SWP_NOMOVE or SWP_NOSIZE Else SetWindowPos hwnd, -2, 0, 0, 0, 0, SWP_NOMOVE or SWP_NOSIZE End If mbOnTop = Setting End Property Private Property Get OnTop() As Boolean 'Return the private variable set in Property Let OnTop = mbOnTop End Property '调用 OnTop=True 即可让窗口 Always OnTop。
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