Re: IOleCommandTarget implementation not called

From:

cal <callum@gmail.com>

Newsgroups:

microsoft.public.vc.atl

Date:

Wed, 10 Sep 2008 02:57:07 -0700 (PDT)

Message-ID:

<e3dd11ac-76d5-450e-86fa-643c0291732e@s1g2000pra.googlegroups.com>

I reduced my application down to something that illustrates the
failure.

It compiles as is in a VC8 console application.

I want to catch script errors in my own Exec method and ignore them.

What am I doing wrong ?

I imagine I'm doing something stupid so please be gentle - I'm mostly
new to ATL/COM.

#include <atlbase.h>
#include <atlcom.h>
#include <atlwin.h>
#include <iostream>

class ATL_NO_VTABLE embedIE :
  public CComObjectRootEx< CComSingleThreadModel >,
  public IDispatch,
  public IOleCommandTarget
{
  public:
    BEGIN_COM_MAP( embedIE )
      COM_INTERFACE_ENTRY( IDispatch )
      COM_INTERFACE_ENTRY_IID( DIID_DWebBrowserEvents2, IDispatch )
      COM_INTERFACE_ENTRY( IOleCommandTarget )
    END_COM_MAP()

    STDMETHOD( GetTypeInfoCount )(UINT* pctinfo)
    {
      return E_NOTIMPL;
    }

    STDMETHOD( GetTypeInfo )(UINT itinfo, LCID lcid, ITypeInfo**
pptinfo)
    {
      return E_NOTIMPL;
    }

    STDMETHOD( GetIDsOfNames )(REFIID riid, LPOLESTR* rgszNames, UINT
cNames, LCID lcid, DISPID* rgdispid)
    {
      return E_NOTIMPL;
    }

    STDMETHODIMP QueryStatus( const GUID* pguidCmdGroup, ULONG cCmds,
OLECMD prgCmds[], OLECMDTEXT* pCmdText )
    {
      std::cout << "embedIE::QueryStatus" << std::endl;
      return S_OK;
    }

    STDMETHODIMP Exec( const GUID* pguidCmdGroup, DWORD nCmdID, DWORD
nCmdExecOpt, VARIANTARG* pvaIn, VARIANTARG* pvaOut )
    {
      std::cout << "embedIE::Exec" << std::endl;
      return S_OK;
    }

    STDMETHODIMP Invoke( DISPID dispid, REFIID riid, LCID lcid, WORD
wFlags, DISPPARAMS* pdispparams, VARIANT* pvarResult, EXCEPINFO*
pexcepinfo, UINT* puArgErr )
    {
      std::cout << "embedIE::Invoke - dispid = " << dispid <<
std::endl;
      return S_OK;
    }
};

CComModule _Module;

int main( int argc, char* argv[] )
{
  CoInitialize( NULL );

  AtlAxWinInit();

  HWND hWndBrowser = CreateWindow( ATLAXWIN_CLASS, "http://
dsc.discovery.com/video/?
playerId 3711706&categoryId=1175888584&lineupId=15803052&titleId=1509264631",
WS_VISIBLE | WS_POPUP | WS_VISIBLE, 0, 0, 512, 512, NULL, NULL, NULL,
NULL );

  CComQIPtr< IViewObject > embeddedObject;
  AtlAxGetControl( hWndBrowser, (IUnknown**)&embeddedObject );

  DWORD cookie;
  CComObject < embedIE >* embeddedBrowserHandler;

  CComObject< embedIE >::CreateInstance( &embeddedBrowserHandler );

  AtlAdvise( embeddedObject, embeddedBrowserHandler->GetUnknown(),
DIID_DWebBrowserEvents2, &cookie );

  MSG msg;
  while ( GetMessage( &msg, 0, 0, 0 ) != 0 )
  {
    TranslateMessage( &msg );
    DispatchMessage( &msg );
  };

  CoUninitialize();
}