Dismiss Dialogue using Windows API
使用Windows API关闭对话框
http://thebuildingcoder.typepad.com/blog/200 ... gue-using-windows-api.htmlImports System
Imports System.Runtime.InteropServices
Imports System.Text
Module User32
Delegate Function EnumWindowsProc(ByVal hWnd As Integer, ByVal lParam As Integer) As Boolean
<DllImport("user32.dll", CharSet:=CharSet.Unicode)> _
Function FindWindow(ByVal className As String, ByVal windowName As String) As Integer
End Function
<DllImport("user32.dll", CharSet:=CharSet.Unicode)> _
Function EnumWindows(ByVal callbackFunc As EnumWindowsProc, ByVal lParam As Integer) As Integer
End Function
<DllImport("user32.dll", CharSet:=CharSet.Unicode)> _
Function EnumChildWindows(ByVal hwnd As Integer, ByVal callbackFunc As EnumWindowsProc, ByVal lParam As Integer) As Integer
End Function
<DllImport("user32.dll", CharSet:=CharSet.Unicode)> _
Function GetWindowText(ByVal hwnd As Integer, ByVal buff As StringBuilder, ByVal maxCount As Integer) As Integer
End Function
<DllImport("user32.dll", CharSet:=CharSet.Unicode)> _
Function GetLastActivePopup(ByVal hwnd As Integer) As Integer
End Function
<DllImport("user32.dll", CharSet:=CharSet.Unicode)> _
Function SendMessage(ByVal hwnd As Integer, ByVal Msg As Integer, ByVal wParam As Integer, ByVal lParam As Integer) As Integer
End Function
Public BM_SETSTATE As Integer = 243
Public WM_LBUTTONDOWN As Integer = 513
Public WM_LBUTTONUP As Integer = 514
End Module
Here is the main application:
Private timer1 As Timer
Private timer_interval As Integer = 300 ' in milliseconds so 1000 = 1 second
Private timer_attempts As Integer
Public Function EnumWindowsProc(ByVal hwnd As Integer, ByVal lParam As Integer) As Boolean
Dim sbTitle As New StringBuilder(256)
Dim test As Integer = User32.GetWindowText(hwnd, sbTitle, sbTitle.Capacity)
Dim title As String = sbTitle.ToString()
If title.Length = 0 Then
Return True
End If
If title = "Options" Then
Else
Return True
End If
User32.EnumChildWindows(hwnd, New User32.EnumWindowsProc(AddressOf EnumChildProc), 0)
Return False
End Function
Public Function EnumChildProc(ByVal hwnd As Integer, ByVal lParam As Integer) As Boolean
Dim sbTitle As New StringBuilder(256)
User32.GetWindowText(hwnd, sbTitle, sbTitle.Capacity)
Dim title As String = sbTitle.ToString()
If title.Length = 0 Then
Return True
End If
If title = "OK" Then
Else
Return True
End If
User32.SendMessage(hwnd, User32.BM_SETSTATE, 1, 0)
User32.SendMessage(hwnd, User32.WM_LBUTTONDOWN, 0, 0)
User32.SendMessage(hwnd, User32.WM_LBUTTONUP, 0, 0)
User32.SendMessage(hwnd, User32.BM_SETSTATE, 1, 0)
timer1.Stop()
timer1 = Nothing
Return False
End Function
Public Sub timer1_Tick(ByVal sender As Object, ByVal e As EventArgs)
'timer_attempts is a failsafe to make sure that if for some reason the Options dialog
' never comes up, we don't keep looking for it forever. We usually find the dialog on the
' first few tries, so if it doesn't come up in about the first minute, we give up
If timer_attempts < 300 Then
User32.EnumWindows(New User32.EnumWindowsProc(AddressOf EnumWindowsProc), 0)
Else
timer1.Stop()
End If
timer_attempts += 1
Debug.Print(timer_attempts.ToString())
End Sub
' The options dialog will not come up until our function returns, so we setup a timer
' that will check every 300 milliseconds to see if it can find the dialog. Once it finds
' the dialog and clicks OK, it stops.
Public Sub closeOptionsDialog()
timer_attempts = 0
If timer1 Is Nothing Then
timer1 = New Timer()
End If
timer1.Interval = timer_interval
AddHandler timer1.Tick, New EventHandler(AddressOf timer1_Tick)
timer1.Start()
End Sub