7fffe99328
Due to being a compositor, kwin has to conform to some certain interfaces. It means a lot of virtual functions and function tables to integrate with C APIs. Naturally, we not always want to use every argument in such functions. Since we get -Wunused-parameter from -Wall, we have to plumb those unused arguments in order to suppress compiler warnings at the moment. However, I don't think that extra work is worth it. We cannot change or alter prototypes in any way to fix the warning the desired way. Q_UNUSED and similar macros are not good indicators of whether an argument is used too, we tend to overlook putting or removing those macros. I've also noticed that Q_UNUSED are not used to guide us with the removal no longer needed parameters. Therefore, I think it's worth adding -Wno-unused-parameter compiler option to stop the compiler producing warnings about unused parameters. It changes nothing except that we don't need to put Q_UNUSED anymore, which can be really cumbersome sometimes. Note that it doesn't affect unused variables, you'll still get a -Wunused-variable compiler warning if a variable is unused.
59 lines
1.2 KiB
C++
59 lines
1.2 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <QClipboard>
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#include <QGuiApplication>
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#include <QPainter>
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#include <QRasterWindow>
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#include <QTimer>
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class Window : public QRasterWindow
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{
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Q_OBJECT
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public:
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explicit Window();
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~Window() override;
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protected:
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void paintEvent(QPaintEvent *event) override;
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void focusInEvent(QFocusEvent *event) override;
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};
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Window::Window()
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: QRasterWindow()
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{
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}
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Window::~Window() = default;
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void Window::paintEvent(QPaintEvent *event)
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{
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QPainter p(this);
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p.fillRect(0, 0, width(), height(), Qt::red);
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}
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void Window::focusInEvent(QFocusEvent *event)
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{
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QRasterWindow::focusInEvent(event);
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// TODO: make it work without singleshot
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QTimer::singleShot(100, [] {
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qApp->clipboard()->setText(QStringLiteral("test"));
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});
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}
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int main(int argc, char *argv[])
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{
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QGuiApplication app(argc, argv);
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std::unique_ptr<Window> w(new Window);
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w->setGeometry(QRect(0, 0, 100, 200));
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w->show();
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return app.exec();
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}
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#include "copy.moc"
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