创建后访问 IE 选项卡 [英] Accessing IE tabs once created

问题描述

使用 VBA，我可以使用以下内容创建具有 3 个不同选项卡的 InternetExplorer 对象

Using VBA I can create an InternetExplorer object with 3 different tabs using the following

Option Explicit

Public Enum IE_READYSTATE
    Uninitialised = 0
    Loading = 1
    Loaded = 2
    Interactive = 3
    complete = 4
End Enum

Sub Example_Click()
Dim ieApp As clsIE

    'Create IE and login
    If ieApp Is Nothing Then
        Set ieApp = New clsIE
        With ieApp

            'IE Tab1
            .IE.Visible = True
            .IE.navigate "http://www.bbc.co.uk/news/"
            Do While .IE.Busy Or Not .IE.readyState = IE_READYSTATE.complete: DoEvents: Loop

            'IE Tab2
            .IE.Navigate2 "http://www.bbc.co.uk", CLng(2048)
            Do While .IE.Busy Or Not .IE.readyState = IE_READYSTATE.complete: DoEvents: Loop

            'IE Tab3
            .IE.Navigate2 "http://www.bbc.co.uk", CLng(2048)
            Do While .IE.Busy Or Not .IE.readyState = IE_READYSTATE.complete: DoEvents: Loop


        End With
    End If

End Sub

然后我如何访问这些标签以....

How can I then access these tabs to....

1. 退出/关闭特定标签?
2. 导航到特定标签上的新网址?
3. 访问特定的标签 DOM?

我知道如何使用单个标签而不是多个标签来完成所有这些工作?

I know how to do all of this with a single tab but not multiple tabs?

推荐答案

我找到了一个看似有效的答案，但我还没有进行严格的测试.我已经修改了你的代码，这样我就可以在没有你的 clsIE 模块的情况下运行它.此代码在打开选项卡时将它们导航到 3 个网址，然后使用 shellwindows 对象将它们导航到新网址.

I have found an answer that appears to work, though I haven't done rigorous testing. I've modified your code so that I can run it without your clsIE module. This code navigates the tabs to 3 urls when opening them and then navigates them to new urls using the shellwindows object.

我更改了 do while .busy.. 行，因为它们不适用于第二个和第三个选项卡，因为 IE 应用程序的状态已准备就绪，而新选项卡仍在加载.

I changed the do while .busy.. lines as they didn't work for the 2nd and 3rd tabs in that the state of the IE applecation was ready whilst the new tabs were still loading.

Sub Example_Click()
Dim ieApp As InternetExplorer
Dim SWs As ShellWindows
Dim IETab1Number As Integer
Dim IETab2Number  As Integer
Dim IETab3Number As Integer

Set SWs = New ShellWindows

'Create IE and login
If ieApp Is Nothing Then
    Set ieApp = CreateObject("InternetExplorer.Application")
    With ieApp

       'IE Tab1
       .Visible = True
       .Navigate "http://www.bbc.co.uk/news/"
       Do While .Busy Or Not .ReadyState = IE_READYSTATE.complete: DoEvents: Loop
       IETab1Number = SWs.Count

       'IE Tab2
       .Navigate2 "http://www.bbc.co.uk/news/uk-scotland-north-east-orkney-shetland-23822420", CLng(2048)
       'Do While .Busy Or Not .ReadyState = IE_READYSTATE.complete: DoEvents: Loop
       Do While SWs.Count = IETab1Number: DoEvents: Loop

       IETab2Number = SWs.Count

       'IE Tab3
       .Navigate2 "http://www.bbc.co.uk", CLng(2048)
       'Do While .Busy Or Not .ReadyState = IE_READYSTATE.complete: DoEvents: Loop
       Do While SWs.Count = IETab2Number: DoEvents: Loop
       IETab3Number = SWs.Count
       'ieApp.Visible = False

       SWs.Item(IETab1Number - 1).Navigate "http://www.bbc.co.uk/"
       SWs.Item(IETab2Number - 1).Navigate2 "http://www.bbc.co.uk/news/"
       SWs.Item(IETab3Number - 1).Navigate2 "http://www.bbc.co.uk/news/"


    End With
End If
Set ieApp = Nothing
Set SWs = Nothing

End Sub

它使用 ShellWindows 来操作选项卡.这只能通过数字完成，所以我猜它可能容易出错.

It uses the ShellWindows to manipulate the tabs. This is only done by number so I'm guessing it could be prone to errors.

为了使其更健壮，您可能希望在操作后从选项卡中获取一些信息，并在返回时检查该值是否相同.例如 sPageTitle = SWs.Item(IETab3Number - 1).Document.Title 可用于将页面标题存储在选项卡中，下次您要使用该选项卡时可以检查它没有改变.

To make it more robust you may want to get some info from the tab after an operation and check that the value is the same when returning to it. For example sPageTitle = SWs.Item(IETab3Number - 1).Document.Title could be used to store the title of the page in a tab, the next time you want to use the tab you can check that it hasn't changed.

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