窗口顶置代码---VB

最新推荐文章于 2023-08-08 10:00:00 发布

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本文介绍了一种使用Visual Basic编程语言实现窗口置顶功能的方法。通过调用Windows API函数SetWindowPos来改变窗口的位置和属性，使窗口始终显示在其他窗口之上或取消此状态。示例代码展示了如何创建一个简单的开关按钮，用于切换窗口的置顶状态。

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 Const SWP_NOMOVE = &H2, SWP_NOSIZE = &H1
Private Const HWND_TOPMOST = -1, HWND_NOTOPMOST = -2
Sub SetTopmostWindow(ByVal hwnd As Long, Optional topmost As Boolean = True)
    Const HWND_NOTOPMOST = -2
    Const HWND_TOPMOST = -1
    Const SWP_NOMOVE = &H2
    Const SWP_NOSIZE = &H1
    SetWindowPos hwnd, IIf(topmost, HWND_TOPMOST, HWND_NOTOPMOST), 0, 0, 0, 0, _
        SWP_NOMOVE + SWP_NOSIZE
End Sub
Private Sub Check1_Click()
    If Check1.Value = vbChecked Then
        SetTopmostWindow Me.hwnd, True
    Else
        SetTopmostWindow Me.hwnd, False
    End If
End Sub