/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the ActiveQt framework of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:BSD$+
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** You may use this file under the terms of the BSD license as follows:+
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**+
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** "Redistribution and use in source and binary forms, with or without+
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** modification, are permitted provided that the following conditions are+
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** met:+
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**   * Redistributions of source code must retain the above copyright+
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**     notice, this list of conditions and the following disclaimer.+
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**   * Redistributions in binary form must reproduce the above copyright+
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**     notice, this list of conditions and the following disclaimer in+
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**     the documentation and/or other materials provided with the+
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**     distribution.+
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**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor+
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**     the names of its contributors may be used to endorse or promote+
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**     products derived from this software without specific prior written+
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**     permission.+
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**+
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef QT_NO_WIN_ACTIVEQT+
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+
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#include <qapplication.h>+
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#include <qwidget.h>+
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+
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#include <qt_windows.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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bool qax_ownQApp = false;+
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HHOOK qax_hhook = 0;+
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+
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// in qaxserver.cpp+
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extern wchar_t qAxModuleFilename[MAX_PATH];+
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extern bool qAxIsServer;+
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extern ITypeLib *qAxTypeLibrary;+
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extern unsigned long qAxLockCount();+
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extern QString qAxInit();+
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extern void qAxCleanup();+
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extern HANDLE qAxInstance;+
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static uint qAxThreadId = 0;+
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+
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extern HRESULT UpdateRegistry(int bRegister);+
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extern HRESULT GetClassObject(const GUID &clsid, const GUID &iid, void **ppUnk);+
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+
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STDAPI DllRegisterServer()+
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{+
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    return UpdateRegistry(true);+
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}+
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+
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STDAPI DllUnregisterServer()+
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{+
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    return UpdateRegistry(false);+
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}+
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+
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STDAPI DllGetClassObject(const GUID &clsid, const GUID &iid, void** ppv)+
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{+
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    if (!qAxThreadId)+
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        qAxThreadId = GetCurrentThreadId();+
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    else if (GetCurrentThreadId() != qAxThreadId)+
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        return E_FAIL; +
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+
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    GetClassObject(clsid, iid, ppv);+
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    if (!*ppv)+
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        return CLASS_E_CLASSNOTAVAILABLE;+
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    return S_OK;+
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}+
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+
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STDAPI DllCanUnloadNow()+
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{+
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    if (GetCurrentThreadId() != qAxThreadId)+
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        return S_FALSE;+
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    if (qAxLockCount())+
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        return S_FALSE;+
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    if (!qax_ownQApp)+
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        return S_OK;+
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    +
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    // check if qApp still runs widgets (in other DLLs)+
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    QWidgetList widgets = qApp->allWidgets();+
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    int count = widgets.count();+
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    for (int w = 0; w < widgets.count(); ++w) {+
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        // remove all Qt generated widgets+
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        QWidget *widget = widgets.at(w);+
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        if (widget->windowType() == Qt::Desktop || widget->objectName() == QLatin1String("Qt internal tablet widget"))+
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            count--;+
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    }+
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    if (count)+
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        return S_FALSE;+
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    +
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    // no widgets left - destroy qApp+
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    if (qax_hhook)+
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        UnhookWindowsHookEx(qax_hhook);+
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    +
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    delete qApp;+
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    qax_ownQApp = false;+
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    +
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    // never allow unloading - safety net for Internet Explorer+
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    return S_FALSE;+
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}+
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+
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+
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EXTERN_C BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpvReserved)+
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{+
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    GetModuleFileName(hInstance, qAxModuleFilename, MAX_PATH);+
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    qAxInstance = hInstance;+
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    qAxIsServer = true;+
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    +
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    if (dwReason == DLL_PROCESS_ATTACH) {+
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        DisableThreadLibraryCalls(hInstance);+
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        qAxInit();+
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    } else if (dwReason == DLL_PROCESS_DETACH) {+
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        qAxCleanup();+
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    }+
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    +
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    return true;+
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}+
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+
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QT_END_NAMESPACE+
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#endif // QT_NO_WIN_ACTIVEQT+
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