VB编程：设置窗体置顶 和 取消窗体置顶

VB窗体置顶，这个功能当然还是要靠万能的API来帮忙，先在窗体模块输入以下代码：
Private Const SWP_NOSIZE = &H1
Private Const SWP_NOMOVE = &H2
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

要窗体画两个按钮，分别用于窗体置顶和取消窗体置顶，代码如下：

Private Sub Command1_Click()
    SetWindowPos hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE     '设置窗口置顶
End Sub

Private Sub Command2_Click()
    SetWindowPos hWnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE    '取消窗口置顶
End Sub

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