Re: How to sink events from the multiple ActiveX controls

"Igor Tandetnik" <>
Fri, 15 Sep 2006 10:44:33 -0400
<eFZ02VN2GHA.5048@TK2MSFTNGP05.phx.gbl> wrote:

I have an ActiveX control (Container) which has n-amount of ActiveX
controls (Group). I currently have proper sink map in Container:

   SINK_ENTRY_EX(0, DIID__IGroupEvents, 1, PositionGroups)

And group is created in following way:

oWnd.Create( m_hWnd, oRect, _T("CONT.Group"), WS_CHILD | WS_VISIBLE, 0
oWnd.QueryControl( __uuidof( IGroup ), (void**)ppoGroup );

DispEventAdvise( *ppoGroup );

This works well with one Group, but when there is two or more Groups
it breaks in:

You must derive from IDispEventImpl multiple times, once for each
control you need to sink events from. Give each such IDispEventImpl
instance a unique ID (the first template parameter). In your sink map,
add an entry for every event of every control you want to sink (e.g. if
you want to sink IGroupEvents event from three different controls, you
would need three separate entries). Make sure the first parameter to
SINK_ENTRY_EX matches the ID you gave to corresponding IDispEventImpl.

When creating controls, again give them IDs matching those in
IDispEventImpl and SINK_ENTRY_EX. An ID is next-to-last parameter to
CWindow::Create. Once you've set everything up with matching IDs, use
AtlAdviseSinkMap to advise or unadvise all controls at once.
With best wishes,
    Igor Tandetnik

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