Can't get IVsTextLinesEvents for HTML/ASPX documents

Question

Using C++, I'm listening for IVsTextLinesEvents events, and it works just fine for most file types (C++/C#/VB).  However for HTML and ASPX files, I can't find a connection point, so I can't advise.  A simplified example (with no error handling) is below.  Is it possible to get these events for these file types?  Thanks!

void TextEventsListener::Connect(VSCOOKIE docCookie)
{
CComPtr<IVsRunningDocumentTable> rdt = GetIVsRunningDocumentTable();

CComPtr<IUnknown> buffer;
rdt->GetDocumentInfo(docCookie, NULL, NULL, NULL, NULL, NULL, NULL, &buffer);

CComQIPtr<IConnectionPointContainer> ptCon(buffer);
CComPtr<IConnectionPoint> pt;

// This line fails for HTML and ASPX files
ptCon->FindConnectionPoint(IID_IVsTextLinesEvents, &pt);

pt->Advise((IVsTextLinesEvents *)this, &mLinesEventCookie);
}

Answer 1

Hi Mark,

Can the function of Connect be called?

Can we get the RDT of HTML and ASPX files well?

We can use IsDocDataReloadable(Int32%)  to determine it.

If we set some breakpoints and debug it, can we found what causes your issue? 

Best regards,

---

Ego [MSFT]
MSDN Community Support | Feedback to us

Answer 2

The HTML/ASPX stuff implement IVsTextBufferProvider, you need to cast the buffer object returned from the RDT to that, ask it for the real buffer and then go down the IConnectionPointContianer route.

Ryan

Answer 3

Thanks, Ryan.  That did it!