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/** @file
*
* COM Events Helper routines.
*/
/*
* Copyright (C) 2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#include "VBoxComEvents.h"
// for IIDs
#include "VirtualBoxImpl.h"
ComEventsHelper::ComEventsHelper()
{
}
ComEventsHelper::~ComEventsHelper()
{
}
HRESULT ComEventsHelper::init(const com::Guid &aGuid)
{
HRESULT hr = 0;
CComPtr<ITypeLib> ptlib;
CComPtr<ITypeInfo> ptinfo;
int i;
hr = ::LoadRegTypeLib(LIBID_VirtualBox, kTypeLibraryMajorVersion, kTypeLibraryMinorVersion, LOCALE_SYSTEM_DEFAULT, &ptlib);
if (FAILED(hr))
return hr;
hr = ptlib->GetTypeInfoOfGuid(aGuid.ref(), &ptinfo);
if (FAILED(hr))
return hr;
CComTypeAttr ptypeattr(ptinfo);
hr = ptinfo->GetTypeAttr(&ptypeattr);
if (FAILED(hr))
return hr;
int cFuncs = ptypeattr->cFuncs;
for (i=0; i<cFuncs; i++)
{
CComFuncDesc pfuncdesc(ptinfo);
DWORD hContext; // help context
BSTR fName;
hr = ptinfo->GetFuncDesc(i, &pfuncdesc);
if (FAILED(hr))
break;
hr = ptinfo->GetDocumentation(pfuncdesc->memid, &fName, NULL, &hContext, NULL);
if (FAILED(hr))
break;
/* We only allow firing event callbacks */
if (_wcsnicmp(fName, L"On", 2) == 0)
{
DISPID did;
hr = ::DispGetIDsOfNames(ptinfo, &fName, 1, &did);
evMap.insert(ComEventsMap::value_type(com::Utf8Str(fName), did));
}
SysFreeString(fName);
pfuncdesc.Release();
}
return hr;
}
HRESULT ComEventsHelper::lookup(com::Utf8Str &aName, DISPID *did)
{
ComEventsMap::const_iterator it = evMap.find(aName);
if (it != evMap.end())
{
*did = it->second;
return S_OK;
}
else
{
*did = 0;
return VBOX_E_OBJECT_NOT_FOUND;
}
}
HRESULT ComEventsHelper::fire(IDispatch* aObj, ComEventDesc& event, CComVariant* result)
{
int argc = event.mArgc;
CComVariant* args = event.mArgs;
DISPPARAMS disp = { args, NULL, argc, 0};
DISPID dispid;
HRESULT hr = lookup(event.mName, &dispid);
if (FAILED(hr))
return hr;
hr = aObj->Invoke(dispid, IID_NULL,
LOCALE_USER_DEFAULT,
DISPATCH_METHOD,
&disp, result,
NULL, NULL);
return hr;
}
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