qt 6.5.1 original

examples/gui/rasterwindow/rasterwindow.h

@@ -0,0 +1,33 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef RASTERWINDOW_H
+#define RASTERWINDOW_H
+
+//! [1]
+#include <QtGui>
+#include <QScopedPointer>
+
+class RasterWindow : public QWindow
+{
+    Q_OBJECT
+public:
+    explicit RasterWindow(QWindow *parent = nullptr);
+
+    virtual void render(QPainter *painter);
+
+public slots:
+    void renderLater();
+    void renderNow();
+
+protected:
+    bool event(QEvent *event) override;
+
+    void resizeEvent(QResizeEvent *event) override;
+    void exposeEvent(QExposeEvent *event) override;
+
+private:
+    QScopedPointer<QBackingStore> m_backingStore;
+};
+//! [1]
+#endif // RASTERWINDOW_H