Teledyne-lecroy Automation API for Bluetooth Analyzers Instrukcja Użytkownika Pobierz pdf (Strona 83)

Automation API for CATC Bluetooth Analyzers

CATC Ver. 1.40

2.9 Analyzer events callback interface

In order to retrieve the events from BTAnalyzer application you must implement

_IAnalyzerEvents interface.

Since this interface is default source interface for BTAnalyzer object there is very

simple implementation from such languages like Visual Basic, VBA, VBScript,

WSH etc.

C++ implementation used in the examples below utilizes implements a sink object

by deriving from IDispEventImpl but not specifying the type library as a template argu-

ment. Instead the type library and default source interface for the object are deter-

mined using AtlGetObjectSourceInterface(). A SINK_ENTRY() macro is used for each event

from each source interface which is to be handled:

class CAnalyzerSink : public IDispEventImpl<IDC_SRCOBJ, CAnalyzerSink>

{

BEGIN_SINK_MAP(CAnalyzerSink)

//Make sure the Event Handlers have __stdcall calling convention

SINK_ENTRY(IDC_SRCOBJ, 1, OnTraceCreated)

SINK_ENTRY(IDC_SRCOBJ, 2, OnStatusReport)

END_SINK_MAP()

. . .

}

Then, after you established the connection with server you need to advise your implementation of

the event interface:

hr = CoCreateInstance( CLSID_BTAnalyzer, NULL,

CLSCTX_SERVER, IID_IBTAnalyzer, (LPVOID *)&m_poBTAnalyzer );

m_poAnalyzerSink = new CAnalyzerSink();

// Make sure the COM object corresponding to pUnk implements

IProvideClassInfo2 or

// IPersist*. Call this method to extract info about source type library if

you

// specified only 2 parameters to IDispEventImpl

hr = AtlGetObjectSourceInterface(m_poBTAnalyzer,&m_poAnalyzerSink->m_libid,

&m_poAnalyzerSink->m_iid, &m_poAnalyzerSink->m_wMajorVerNum,

&m_poAnalyzerSink->m_wMinorVerNum);

if ( FAILED(hr) )

return 1;

// connect the sink and source, m_poBTAnalyzer is the source COM object

hr = m_poAnalyzerSink->DispEventAdvise(m_poBTAnalyzer,

&m_poAnalyzerSink->m_iid);

if ( FAILED(hr) )

return 1;

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Teledyne-lecroy Automation API for Bluetooth Analyzers Instrukcja Użytkownika Strona 83