Re: receiving events in console app

From:
"Alexander Nickolov" <agnickolov@mvps.org>
Newsgroups:
microsoft.public.vc.atl
Date:
Thu, 11 Oct 2007 09:58:46 -0700
Message-ID:
<Oz4bmfCDIHA.1316@TK2MSFTNGP02.phx.gbl>
There is something wrong with your object. You explicitly
created it in the MTA, so a message loop should be irrelevant.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://vcfaq.mvps.org
=====================================

"Peter Posselt Vergmann" <ppv_milestone@hotmail.com> wrote in message
news:ujzTkf%23CIHA.1208@TK2MSFTNGP03.phx.gbl...

I found out this myself so just posting the solution if anyone else gets
this problem.
I simply added a message loop in main instead of the getchar():
int _tmain(int argc, _TCHAR* argv[])
{
 EventReceiver er;
 er.Start();
 printf("started\n");
 MSG msg;
 while (GetMessage(&msg, NULL, 0, 0))
 {
   TranslateMessage(&msg);
   DispatchMessage(&msg);
 }
 er.Stop();
 return 0;
}

/Peter

"Peter Posselt Vergmann" <ppv_milestone@hotmail.com> wrote in message
news:uMZ6uSzCIHA.1188@TK2MSFTNGP04.phx.gbl...

Hi
I am a newbie to COM and ATL and is trying to create a console
application that can receive events from a COM service.
I have a demo GUI application which is working fine and have simply
copied all COM and event functionality to a simple console application,
but I never receive and events in the console app.
I have searched through google and have found different suggestions and
tried them all without any luck, so now my hope is that someone on this
group will have a look at the code and tell me what I do wrong. I am
using VC 2003 on a Windows XP SP2 if that matters.
Hope someone can help..
Best regards,
Peter

CComModule _Module;
class EventReceiver :
  public IDispEventImpl<0, EventReceiver,
&VideoOS_SDK::DIID_ICentralEvents, &VideoOS_SDK::LIBID_VideoOS_SDK, 3, 0>
{
public:
 EventReceiver(void)
 {
   CoInitializeEx(NULL,COINIT_MULTITHREADED);
   _Module.Init(NULL, GetModuleHandle(NULL));
 };
 ~EventReceiver(void){};
 void Start()
 {
   m_pCentral.CreateInstance(__uuidof(VideoOS_SDK::Central));
   if (m_pCentral != NULL)
   {
     m_pCentral->SystemInfoUpdateInterval = 1;
     CComPtr<IUnknown> pUnk;
     this->_LocDEQueryInterface(IID_IUnknown, (void**)&pUnk);
     HRESULT hresult = AtlAdvise(m_pCentral.GetInterfacePtr(), pUnk,
__uuidof(VideoOS_SDK::ICentralEvents), &m_dwCentralEventSinkCP);
     _variant_t connected = m_pCentral->Connect();
   }
 };
 void Stop()
 {
   m_pCentral->Close();
   HRESULT hresult = AtlUnadvise(m_pCentral.GetInterfacePtr(),
__uuidof(VideoOS_SDK::ICentralEvents), m_dwCentralEventSinkCP);
 };
public:
 BEGIN_SINK_MAP(EventReceiver)
   SINK_ENTRY_EX(0, VideoOS_SDK::DIID_ICentralEvents, 1,
ConnectionStateChanged)
   SINK_ENTRY_EX(0, VideoOS_SDK::DIID_ICentralEvents, 2,
SystemStatusUpdated)
   SINK_ENTRY_EX(0, VideoOS_SDK::DIID_ICentralEvents, 3, DeviceEvent)
 END_SINK_MAP()
protected:
 void _stdcall ConnectionStateChanged(VARIANT sender, LPDISPATCH
e){printf("ConnectionStateChanged\n");};
 void _stdcall SystemStatusUpdated(VARIANT sender, LPDISPATCH
e){printf("SystemStatusUpdated\n");};
 void _stdcall DeviceEvent(VARIANT sender, LPDISPATCH
e){printf("DeviceEvent\n");};
private:
 VideoOS_SDK::ICentralPtr m_pCentral;
 DWORD m_dwCentralEventSinkCP;
};

int _tmain(int argc, _TCHAR* argv[])
{
 EventReceiver er;
 er.Start();
 printf("started\n");
 getchar();
 er.Stop();
 return 0;
}

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