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fabio (8)
Hi. Why I can't create an instance of this interface implementation?

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class CExplorerBrowserEvents : public IExplorerBrowserEvents
{  
    public:  
         CExplorerBrowserEvents();
         ~CExplorerBrowserEvents();
         
      virtual HRESULT __stdcall QueryInterface (REFIID iid, void ** ppvObject);
      virtual ULONG   __stdcall AddRef (void);
      virtual ULONG   __stdcall Release (void);
   
        virtual HRESULT __stdcall OnNavigationComplete(PCIDLIST_ABSOLUTE pidlFolder);
      virtual HRESULT __stdcall OnNavigationFailed(PCIDLIST_ABSOLUTE pidlFolder);
      virtual HRESULT __stdcall OnNavigationPending(PCIDLIST_ABSOLUTE pidlFolder);
      virtual HRESULT __stdcall OnViewCreated(IShellView *psv);
   private:
      ;
};


CExplorerBrowserEvents::CExplorerBrowserEvents()
{
   ;
}

CExplorerBrowserEvents::~CExplorerBrowserEvents()
{
   ;
}

HRESULT __stdcall CExplorerBrowserEvents::QueryInterface (REFIID iid, void ** ppvObject)
{
   if(iid == IID_IUnknown)
   {
      AddRef();
      *ppvObject = this;
      return S_OK;
   }
   else
   {
      *ppvObject = 0;
      return E_NOINTERFACE;
   }
}

ULONG __stdcall CExplorerBrowserEvents::AddRef(void)
{
   return 1;
}   

ULONG __stdcall CExplorerBrowserEvents::Release(void)
{
   return 1;
}

HRESULT __stdcall CExplorerBrowserEvents::OnNavigationComplete(PCIDLIST_ABSOLUTE pidlFolder)
{
   return E_NOTIMPL;
}

HRESULT __stdcall CExplorerBrowserEvents::OnNavigationFailed(PCIDLIST_ABSOLUTE pidlFolder)
{
   return E_NOTIMPL;
}

HRESULT __stdcall CExplorerBrowserEvents::OnNavigationPending(PCIDLIST_ABSOLUTE pidlFolder)
{
   return E_NOTIMPL;
}

HRESULT __stdcall CExplorerBrowserEvents::OnViewCreated(IShellView *psv)
{
   return E_NOTIMPL;
}


when I try to create an instance I get: [Error] cannot construct an abstract class

 
 
CExplorerBrowserEvents *events = new CExplorerBrowserEvents;    // <------ here


How can I solve this problem?
Last edited on
guestgulkan (2942)
I just tried the code you posted and I didn't get that error.
fabio (8)
Maybe this is an Open Watcom mistake then. I will try using a different compiler, but I can't use Visual C++ 2010 Express, cuz I need the CLSID_ExplorerBrowser in the same example.
I can link an example with CLSID_ExplorerBrowser in Open Watcom, but I can't in Visual Express.

Thank you for the answer.
Last edited on
fabio (8)
I have to correct myself... I finally got it in VExpress and will have to use this compiler for a while.
Ty again.
Last edited on
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