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这是一个关于模态窗口与非模态窗口的问题。
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实现非模态窗口也没什么难度
Dim form As New Form1
form.TopMost = True
form.Show()
你再将鼠标移到父窗口上,弹出的窗口也不会消失。
引用API函数SetWindowPos就可以解决。下面看看代码:
Private Declare Function SetWindowPos Lib "user32.dll" (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 SWP_NOMOVE = H2
Const SWP_NOSIZE = H1
Const FLAG = SWP_NOMOVE Or SWP_NOSIZE
Const HWND_TOPMOST = -1
Const HWND_NOTOPMOST = -2
Const HWND_TOP = 0
Const HWND_BOTTOM = 1
将窗口设置最前:Call SetWindowPos(Me.hwnd, HWND_TOPMOST, 0, 0, 0, 0, FLAG)
取消窗口的最前:Call SetWindowPos(Me.hwnd, HWND_NOTOPMOST, 0, 0, 0, 0, FLAG)
函数的第一个参数是根据实际情况改变的,它要求给它传送一个窗口的句柄,这里的 Me.hwnd 就给函数传送了当前窗口的句柄,也就是将当前窗口前置或取消前置。如果要前置其他窗口,那么请向函数传送其他窗口的句柄,这个可以根据:FindWindow API函数获取。
如果要不会被DIRECTX全屏的程序覆盖,那么加上一个timer事件,每隔一秒就把窗口显示在前面,哈哈我测试过了有效,以前学过一个学期的VB。
代码如下
Option Explicit
Const Hwndx = -1
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 Sub Form_Load()
Timer1.Enabled = True
Timer1.Interval = 1000
End Sub
Private Sub Timer1_Timer()
Dim XX As Long
XX = SetWindowPos(Me.Hwnd, Hwndx, 0, 0, 0, 0, 3)
End Sub
记住别忘加timer按钮
或者这样
建立模块
Option Explicit
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)
Private Sub Form_Load()
Dim rtn
'让窗口在顶层
rtn = SetWindowPos(Me.hwnd, -1, 0, 0, 0, 0, 3)
'取消窗口在顶层
'rtn = SetWindowPos(F_V.hwnd, -2, 0, 0, 0, 0, 3)
End Sub