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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the ActiveQt framework of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qapplication.h>
#include <private/qcoreapplication_p.h>
#include <qwidget.h>
#include <qdir.h>
#include <qt_windows.h>
QT_BEGIN_NAMESPACE
bool qax_ownQApp = false;
HHOOK qax_hhook = 0;
// in qaxserver.cpp
extern wchar_t qAxModuleFilename[MAX_PATH];
extern bool qAxIsServer;
extern ITypeLib *qAxTypeLibrary;
extern unsigned long qAxLockCount();
extern QString qAxInit();
extern void qAxCleanup();
extern HANDLE qAxInstance;
static uint qAxThreadId = 0;
extern HRESULT UpdateRegistry(int bRegister);
extern HRESULT GetClassObject(const GUID &clsid, const GUID &iid, void **ppUnk);
STDAPI DllRegisterServer()
{
return UpdateRegistry(true);
}
STDAPI DllUnregisterServer()
{
return UpdateRegistry(false);
}
STDAPI DllGetClassObject(const GUID &clsid, const GUID &iid, void** ppv)
{
if (!qAxThreadId)
qAxThreadId = GetCurrentThreadId();
else if (GetCurrentThreadId() != qAxThreadId)
return E_FAIL;
GetClassObject(clsid, iid, ppv);
if (!*ppv)
return CLASS_E_CLASSNOTAVAILABLE;
return S_OK;
}
STDAPI DllCanUnloadNow()
{
if (GetCurrentThreadId() != qAxThreadId)
return S_FALSE;
if (qAxLockCount())
return S_FALSE;
if (!qax_ownQApp)
return S_OK;
// check if qApp still runs widgets (in other DLLs)
QWidgetList widgets = QApplication::allWidgets();
int count = widgets.count();
for (int w = 0; w < widgets.count(); ++w) {
// remove all Qt generated widgets
QWidget *widget = widgets.at(w);
if (widget->windowType() == Qt::Desktop || widget->objectName() == QLatin1String("Qt internal tablet widget"))
count--;
}
if (count)
return S_FALSE;
// no widgets left - destroy qApp
if (qax_hhook)
UnhookWindowsHookEx(qax_hhook);
delete qApp;
qax_ownQApp = false;
// never allow unloading - safety net for Internet Explorer
return S_FALSE;
}
EXTERN_C BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID /* lpvReserved */)
{
GetModuleFileName(hInstance, qAxModuleFilename, MAX_PATH);
// Point QApplication here such that the directory is added to the patch, and qt.conf and
// deployed plugins are found.
QCoreApplicationPrivate::setApplicationFilePath(QDir::cleanPath(QString::fromWCharArray(qAxModuleFilename)));
qAxInstance = hInstance;
qAxIsServer = true;
if (dwReason == DLL_PROCESS_ATTACH) {
DisableThreadLibraryCalls(hInstance);
qAxInit();
} else if (dwReason == DLL_PROCESS_DETACH) {
qAxCleanup();
}
return true;
}
QT_END_NAMESPACE
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