// Copyright (C) 2016 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause void wrapInFunction() { //! [0] class MyClass : public QObject { Q_OBJECT Q_CLASSINFO("author", "Sabrina Schweinsteiger") Q_CLASSINFO("url", "http://doc.moosesoft.co.uk/1.0/") public: ... }; //! [0] //! [1] QByteArray normType = QMetaObject::normalizedType(" int const *"); // normType is now "const int*" //! [1] //! [2] QMetaObject::invokeMethod(thread, "quit", Qt::QueuedConnection); //! [2] //! [3] QMetaObject::invokeMethod: Unable to handle unregistered datatype 'MyType' //! [3] //! [invokemethod-no-macro] QString retVal; QMetaObject::invokeMethod(obj, "compute", Qt::DirectConnection, qReturnArg(retVal), QString("sqrt"), 42, 9.7); //! [invokemethod-no-macro] //! [invokemethod-no-macro-other-types] QString retVal; QMetaObject::invokeMethod(obj, "compute", Qt::DirectConnection, qReturnArg(retVal), QStringView("sqrt"), qsizetype(42), 9.7f); //! [invokemethod-no-macro-other-types] //! [4] QString retVal; QMetaObject::invokeMethod(obj, "compute", Qt::DirectConnection, Q_RETURN_ARG(QString, retVal), Q_ARG(QString, "sqrt"), Q_ARG(int, 42), Q_ARG(double, 9.7)); //! [4] //! [5] class MyClass { Q_OBJECT Q_CLASSINFO("author", "Sabrina Schweinsteiger") Q_CLASSINFO("url", "http://doc.moosesoft.co.uk/1.0/") public: ... }; //! [5] //! [propertyCount] const QMetaObject* metaObject = obj->metaObject(); QStringList properties; for(int i = metaObject->propertyOffset(); i < metaObject->propertyCount(); ++i) properties << QString::fromLatin1(metaObject->property(i).name()); //! [propertyCount] //! [methodCount] const QMetaObject* metaObject = obj->metaObject(); QStringList methods; for(int i = metaObject->methodOffset(); i < metaObject->methodCount(); ++i) methods << QString::fromLatin1(metaObject->method(i).methodSignature()); //! [methodCount] //! [6] int methodIndex = pushButton->metaObject()->indexOfMethod("animateClick()"); QMetaMethod method = metaObject->method(methodIndex); method.invoke(pushButton, Qt::QueuedConnection); //! [6] //! [7] QMetaMethod::invoke: Unable to handle unregistered datatype 'MyType' //! [7] //! [invoke-no-macro] QString retVal; QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QString, int, double)"); int methodIndex = obj->metaObject()->indexOfMethod(normalizedSignature); QMetaMethod method = obj->metaObject()->method(methodIndex); method.invoke(obj, Qt::DirectConnection, qReturnArg(retVal), QString("sqrt"), 42, 9.7); //! [invoke-no-macro] //! [invoke-no-macro-other-types] QString retVal; QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QByteArray, qint64, long double)"); int methodIndex = obj->metaObject()->indexOfMethod(normalizedSignature); QMetaMethod method = obj->metaObject()->method(methodIndex); method.invoke(obj, Qt::DirectConnection, qReturnArg(retVal), QByteArray("sqrt"), qint64(42), 9.7L); //! [invoke-no-macro-other-types] //! [8] QString retVal; QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QString, int, double)"); int methodIndex = obj->metaObject()->indexOfMethod(normalizedSignature); QMetaMethod method = obj->metaObject()->method(methodIndex); method.invoke(obj, Qt::DirectConnection, Q_RETURN_ARG(QString, retVal), Q_ARG(QString, "sqrt"), Q_ARG(int, 42), Q_ARG(double, 9.7)); //! [8] //! [9] QMetaMethod destroyedSignal = QMetaMethod::fromSignal(&QObject::destroyed); //! [9] //! [10] // In the class MainWindow declaration #ifndef Q_MOC_RUN // define the tag text as empty, so the compiler doesn't see it # define MY_CUSTOM_TAG #endif ... private slots: MY_CUSTOM_TAG void testFunc(); //! [10] //! [11] MainWindow win; win.show(); int functionIndex = win.metaObject()->indexOfSlot("testFunc()"); QMetaMethod mm = win.metaObject()->method(functionIndex); qDebug() << mm.tag(); // prints MY_CUSTOM_TAG //! [11] }