| /**************************************************************************** |
| ** |
| ** Copyright (C) 2014 Sze Howe Koh <szehowe.koh@gmail.com> |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the documentation of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
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| ** BSD License Usage |
| ** Alternatively, 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 |
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| ** met: |
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| ****************************************************************************/ |
| |
| #include <QtWidgets> |
| |
| class DemoWidget : public QWidget { |
| Q_OBJECT |
| |
| public: |
| DemoWidget(QWidget *parent = nullptr); |
| |
| void demoImplicitConversion(); |
| void demoTypeResolution(); |
| void demoCrossLanguageConnect(); |
| void demoOverloadConnect(); |
| |
| //! [defaultparams] |
| public slots: |
| void printNumber(int number = 42) { |
| qDebug() << "Lucky number" << number; |
| } |
| //! [defaultparams] |
| }; |
| |
| |
| //! [lambda] |
| class TextSender : public QWidget { |
| Q_OBJECT |
| |
| QLineEdit *lineEdit; |
| QPushButton *button; |
| |
| signals: |
| void textCompleted(const QString& text) const; |
| |
| public: |
| TextSender(QWidget *parent = nullptr); |
| }; |
| //! [lambda] |
| |
| |
| //! [crosslanguage] |
| class CppGui : public QWidget { |
| Q_OBJECT |
| |
| QPushButton *button; |
| |
| signals: |
| void cppSignal(const QVariant& sentMsg) const; |
| |
| public slots: |
| void cppSlot(const QString& receivedMsg) const { |
| qDebug() << "C++ received:" << receivedMsg; |
| } |
| |
| public: |
| CppGui(QWidget *parent = nullptr) : QWidget(parent) { |
| button = new QPushButton("Click Me!", this); |
| connect(button, &QPushButton::clicked, [=] { |
| emit cppSignal("Hello from C++!"); |
| }); |
| } |
| }; |
| //! [crosslanguage] |