src/activeqt/control/qaxserverdll.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/activeqt/control/qaxserverdll.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,139 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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 Nokia Corporation and its Subsidiary(-ies) 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT_NO_WIN_ACTIVEQT
+
+#include <qapplication.h>
+#include <qwidget.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 = qApp->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);
+    qAxInstance = hInstance;
+    qAxIsServer = true;
+    
+    if (dwReason == DLL_PROCESS_ATTACH) {
+        DisableThreadLibraryCalls(hInstance);
+        qAxInit();
+    } else if (dwReason == DLL_PROCESS_DETACH) {
+        qAxCleanup();
+    }
+    
+    return true;
+}
+
+QT_END_NAMESPACE
+#endif // QT_NO_WIN_ACTIVEQT