ATL / WTL / STL

AkshayO wrote:

I am creating an com addin for Office using VC++. The project is ATL based. My question is how can I implement a common handler for a set of CommandBarButtons?

The sink map basically provides the mapping between a dispid that defines the event and the member function that handles it. Command button fires the event with dispid 0x01 so there is no need to setup sink map for every button.

BEGIN_SINK_MAP(CAddin)
SINK_ENTRY_INFO( 1,__uuidof(Office::_CommandBarButtonEvents),/*dispid*/ 0x01,OnClickButton,&OnClickButtonInfo)
END_SINK_MAP()

You can differentiate button's with the help of button value or caption.

void __stdcall CAddin::OnClickButton(
      IDispatch* /*Office::_CommandBarButton* */ Ctrl,
      VARIANT_BOOL * CancelDefault)
{
  USES_CONVERSION;
  CComQIPtr pCommandBarButton(Ctrl);
  MessageBox(NULL, "Clicked", "OnClickButton", MB_OK);
}

Knock out 't' from can't,
You can if you think you can