Teledyne-lecroy SAS_SATA Automation API manual Manual de usuario descargar pdf (Pagina 132)

TeledyneLeCroy SASVScriptEngineObjectEvents

126 AutomationAPIforTeledyneLeCroySAS/SATAProtocolSuite

SASVScriptEngine Object Events

_IVScriptEngineEvents Interface

ToretrieveeventnotificationsfromtheTeledyneLeCroySAS/SATAProtocolSuite

applicationwhenaverificationscriptengineobjectisrunningthescript,youmust

implementthe_IVScriptEngineEventscallbackinterface. Sincethisinterfaceisadefault

sourceinterfacefortheSASVScriptEngineobject,thereisaverysimpleimplementation

fromlanguagessuchasVisualBasic,VBA,VBScript,andWSH.

Somescriptenginesimposerestrictionsonhandling eventsfrom“indirect”automation

objectsintypelessscriptlanguages(whenanautomationinterfacetotheobjectis

obtainedfromacallofsomemethod,ratherthanfromcreationfunction,suchas

CreateObject()inVBScript).TheSAS/SATAProtocolSuiteapplicationprovidesaspecial

COMclass,allowingreceivingandhandlingofnotificationsfromaVSEobjectevenin

scriptlanguagesnotsupportingeventhandlingfrom"indirect"objects.

Example

TheC++implementationusedintheexamplesbelowimplementsaneventsinkobjectby

derivingitfromIdispEventImpl,butnotspecifyingthetypeli braryasatemplate

argument.Instead,thetypelibraryanddefa ultsourceinterfacefortheobjectare

determinedusingAtlGetObjectSourceInterface().

ASINK_ENTRY()macroisusedforeacheventfromeachsourceinterfacethatistobe

handled:

Example

C++:

class CVSEngineSink : public

IDispEventImpl<IDC_SRCOBJ_VSE, CVSEngineSink >

{

public:

...

BEGIN_SINK_MAP(CVSEngineSink)

// Make sure the Event Handlers have __stdcall calling

convention.

SINK_ENTRY( IDC_SRCOBJ_VSE, 1, OnVScriptReportUpdated )

SINK_ENTRY( IDC_SRCOBJ_VSE, 2, OnVScriptFinished )

SINK_ENTRY( IDC_SRCOBJ_VSE, 3, OnNotifyClient )

END_SINK_MAP()

HRESULT __stdcall OnVScriptReportUpdated ( BSTR

newLine, int TAG );

HRESULT __stdcall OnVScriptFinished( BSTR script_name,

VS_RESULT result,

int TAG );

HRESULT __stdcall OnNotifyClient (int eventId, VARIANT

eventBody, int TAG);

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