| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** Contact: Qt Software Information (qt-info@nokia.com)
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| 5 | **
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| 6 | ** This file is part of the ActiveQt framework of the Qt Toolkit.
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| 7 | **
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| 8 | ** $QT_BEGIN_LICENSE:BSD$
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| 9 | ** You may use this file under the terms of the BSD license as follows:
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| 10 | **
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| 11 | ** "Redistribution and use in source and binary forms, with or without
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| 12 | ** modification, are permitted provided that the following conditions are
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| 13 | ** met:
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| 14 | ** * Redistributions of source code must retain the above copyright
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| 15 | ** notice, this list of conditions and the following disclaimer.
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| 16 | ** * Redistributions in binary form must reproduce the above copyright
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| 17 | ** notice, this list of conditions and the following disclaimer in
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| 18 | ** the documentation and/or other materials provided with the
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| 19 | ** distribution.
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| 20 | ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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| 21 | ** the names of its contributors may be used to endorse or promote
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| 22 | ** products derived from this software without specific prior written
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| 23 | ** permission.
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| 24 | **
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| 25 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 26 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 27 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 28 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 29 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 30 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 31 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 32 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 33 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 34 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 35 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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| 36 | ** $QT_END_LICENSE$
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| 37 | **
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| 38 | ****************************************************************************/
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| 39 |
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| 40 | #ifndef QT_NO_WIN_ACTIVEQT
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| 41 |
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| 42 | #include <qapplication.h>
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| 43 | #include <qwidget.h>
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| 44 |
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| 45 | #include <qt_windows.h>
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| 46 |
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| 47 | QT_BEGIN_NAMESPACE
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| 48 |
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| 49 | bool qax_ownQApp = false;
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| 50 | HHOOK qax_hhook = 0;
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| 51 |
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| 52 | // in qaxserver.cpp
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| 53 | extern char qAxModuleFilename[MAX_PATH];
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| 54 | extern bool qAxIsServer;
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| 55 | extern ITypeLib *qAxTypeLibrary;
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| 56 | extern unsigned long qAxLockCount();
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| 57 | extern QString qAxInit();
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| 58 | extern void qAxCleanup();
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| 59 | extern HANDLE qAxInstance;
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| 60 | static uint qAxThreadId = 0;
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| 61 |
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| 62 | extern HRESULT UpdateRegistry(int bRegister);
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| 63 | extern HRESULT GetClassObject(const GUID &clsid, const GUID &iid, void **ppUnk);
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| 64 |
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| 65 | STDAPI DllRegisterServer()
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| 66 | {
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| 67 | return UpdateRegistry(true);
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| 68 | }
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| 69 |
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| 70 | STDAPI DllUnregisterServer()
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| 71 | {
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| 72 | return UpdateRegistry(false);
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| 73 | }
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| 74 |
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| 75 | STDAPI DllGetClassObject(const GUID &clsid, const GUID &iid, void** ppv)
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| 76 | {
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| 77 | if (!qAxThreadId)
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| 78 | qAxThreadId = GetCurrentThreadId();
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| 79 | else if (GetCurrentThreadId() != qAxThreadId)
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| 80 | return E_FAIL;
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| 81 |
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| 82 | GetClassObject(clsid, iid, ppv);
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| 83 | if (!*ppv)
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| 84 | return CLASS_E_CLASSNOTAVAILABLE;
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| 85 | return S_OK;
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| 86 | }
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| 87 |
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| 88 | STDAPI DllCanUnloadNow()
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| 89 | {
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| 90 | if (GetCurrentThreadId() != qAxThreadId)
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| 91 | return S_FALSE;
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| 92 | if (qAxLockCount())
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| 93 | return S_FALSE;
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| 94 | if (!qax_ownQApp)
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| 95 | return S_OK;
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| 96 |
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| 97 | // check if qApp still runs widgets (in other DLLs)
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| 98 | QWidgetList widgets = qApp->allWidgets();
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| 99 | int count = widgets.count();
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| 100 | for (int w = 0; w < widgets.count(); ++w) {
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| 101 | // remove all Qt generated widgets
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| 102 | QWidget *widget = widgets.at(w);
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| 103 | if (widget->windowType() == Qt::Desktop || widget->objectName() == QLatin1String("Qt internal tablet widget"))
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| 104 | count--;
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| 105 | }
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| 106 | if (count)
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| 107 | return S_FALSE;
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| 108 |
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| 109 | // no widgets left - destroy qApp
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| 110 | if (qax_hhook)
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| 111 | UnhookWindowsHookEx(qax_hhook);
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| 112 |
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| 113 | delete qApp;
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| 114 | qax_ownQApp = false;
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| 115 |
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| 116 | // never allow unloading - safety net for Internet Explorer
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| 117 | return S_FALSE;
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| 118 | }
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| 119 |
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| 120 |
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| 121 | EXTERN_C BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpvReserved)
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| 122 | {
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| 123 | GetModuleFileNameA(hInstance, qAxModuleFilename, MAX_PATH-1);
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| 124 | qAxInstance = hInstance;
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| 125 | qAxIsServer = true;
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| 126 |
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| 127 | if (dwReason == DLL_PROCESS_ATTACH) {
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| 128 | DisableThreadLibraryCalls(hInstance);
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| 129 | qAxInit();
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| 130 | } else if (dwReason == DLL_PROCESS_DETACH) {
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| 131 | qAxCleanup();
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| 132 | }
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| 133 |
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| 134 | return true;
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| 135 | }
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| 136 |
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| 137 | QT_END_NAMESPACE
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| 138 | #endif // QT_NO_WIN_ACTIVEQT
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