Excel VBA：从函数调用子过程

Question

My code is retrieving an HTML page as an object, given a certain parameter:

Public Sub MyPage(myparam)
Dim oHtml As HTMLDocument

Set oHtml = New HTMLDocument

With CreateObject("WINHTTP.WinHTTPRequest.5.1")
    .Open "GET", "http://www.example.com" & myparam, False
    .send
    oHtml.body.innerHTML = .responseText
End With

End Sub

I'm defining functions that will use the same object, therefore, I want to minimize the number of connections. So I want to define a function like:

Function myFunction(myparam As String)

Call MyPage(myparam)

'code here

End Function

But this isn't working. When I type =myFunction into a cell, I get the #VALUE! error.

If I just type the code of the sub procedure inside the function, it works, something like:

Function myFunction(myparam As String)

Dim oHtml As HTMLDocument

Set oHtml = New HTMLDocument

With CreateObject("WINHTTP.WinHTTPRequest.5.1")
    .Open "GET", "http://www.example.com" & myparam, False
    .send
    oHtml.body.innerHTML = .responseText
End With

    'code here

End Function

But, as mentioned above, this will require the same connection and object for different functions.

How can I solve this? Thanks

Answer 1

Converting my comment to an answer:

Use your oHtml variable as Public variable .