c4856a9075
Although the QBackingStore constructor takes a QWindow* as a parameter, it does not inherit QObject and doesn't become a QObject child of the QWindow. Use QScopedPointer to avoid memory leaks. Pick-to: 6.2 Change-Id: Ib065163a9149d002f8220a0257bd78549062c595 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io> Reviewed-by: Paul Wicking <paul.wicking@qt.io>
81 lines
3.0 KiB
C++
81 lines
3.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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** This file is part of the examples of the Qt Toolkit.
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** BSD License Usage
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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****************************************************************************/
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#ifndef RASTERWINDOW_H
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#define RASTERWINDOW_H
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//! [1]
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#include <QtGui>
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#include <QScopedPointer>
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class RasterWindow : public QWindow
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{
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Q_OBJECT
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public:
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explicit RasterWindow(QWindow *parent = nullptr);
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virtual void render(QPainter *painter);
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public slots:
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void renderLater();
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void renderNow();
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protected:
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bool event(QEvent *event) override;
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void resizeEvent(QResizeEvent *event) override;
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void exposeEvent(QExposeEvent *event) override;
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private:
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QScopedPointer<QBackingStore> m_backingStore;
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};
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//! [1]
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#endif // RASTERWINDOW_H
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