The following code, along with the Header file, shows how to use the PNA Events.
Download the Header file 'preventcatcher.h'
#include <atlbase.h>
#include <atlcom.h>
#include <iostream>
#import "835x.tlb" no_namespace,raw_interfaces_only,named_guids
#include "pnaeventcatcher.h"
inline void HR(HRESULT hr)
{
if (FAILED(hr))
throw hr;
}
class MyEventCatcher : public CPNAEventCatcher
{
public:
MyEventCatcher()
{
CoInitialize(NULL);
CComPtr<IApplication> app;
HR(app.CoCreateInstance(CLSID_Application));
CPNAEventCatcher::SubscribeCatcher(app);
HR(app->AllowAllEvents());
}
~MyEventCatcher()
{
CPNAEventCatcher::Release();
CoUninitialize();
}
virtual void OnMeasurementEvent(long eventID,long measurementNumber) {}
virtual void OnChannelEvent(long eventID,long ch)
{
if (eventID == 0x68070709L) //MSG_ALL_SWEEPS_COMPLETED_AND_PROCESSED
{
static int i =0;
++i;
std::cout << "Sweep:" << i << std::endl;
}
}
};
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In a .cpp file, (just like most ATL projects) you must have a declared an instance of CComModule. This will work:
CComModule _Module;
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Remember that you are now the "Server" and the PNA is the Client. That makes DCOM a bit complicated.
This code was tested in VS2005 using a wizard generated MFC MDI project.