VBA中Internet Explorer窗口的数据类型是什么？

Question

I was just wondering how do we have to declare "ie" from the following code?

Dim objShell As Object
Set objShell = CreateObject("Shell.Application")
Set ie = objShell.Windows(x)

Thank you :)

Answer 1

You can just use Object but it's easier if you enable the Microsoft Internet Controls library as it creates more specific objects. This allows you to use intellisense while coding which makes it much less of a guessing game of what properties and actions are available. Here's some sample code once you have it enabled.

Dim ieobject As InternetExplorer

Set ieobject = New InternetExplorer
ieobject.Visible = True


ieobject.navigate Url:="https://www.StackOverFlow.com"


'get the HTML document for the page.
    Dim ieDOCUMENT As HTMLDocument
    Set ieDOCUMENT = ieobject.document

This site covers it well (along with a lot of other VBA topics)

If you get the error User-defined Type not defined , you haven't enabled the Microsoft Internet Controls library.

Answer 2

Place a breakpoint (F9) in your procedure, then bring up the Locals toolwindow (View /> Locals) when the breakpoint is hit.

The runtime data types will appear under the "Type" column ¹ :

If you are not referencing the type library where these classes and interfaces are defined, the type to use at the declaration site is Object , or Variant - because there is no compile-time reference to the library, the compiler cannot bind the types at compile-time, so you would get a compile error if you tried to declare the object variables otherwise.

With a reference to the appropriate type library , you can still use late binding and declare everything As Object , but that would be silly with the library right there waiting to be used.

In your particular example (as provided anyway), the type of ie is... Object , and the reference is Nothing , so expect any member call against ie to throw error 91:

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_{¹ Unless user interfaces are involved... that's a bug in the VBE, unlikely to ever see a fix.}