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diff --git a/tools/build/v2/example/qt/qt3/hello/canvas.h b/tools/build/v2/example/qt/qt3/hello/canvas.h
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+// Copyright Vladimir Prus 2004.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef CANVAS_VP_2004_08_31
+#define CANVAS_VP_2004_08_31
+
+#include <qmainwindow.h>
+#include <qpen.h>
+#include <qbrush.h>
+
+class Canvas : public QWidget
+{
+ Q_OBJECT
+public:
+ Canvas(QWidget* parent);
+
+ virtual ~Canvas();
+
+public slots:
+ void change_color();
+
+private:
+ void redraw();
+ class QCanvas* m_canvas;
+ class QCanvasView* m_canvas_view;
+ class QPen m_pen;
+ class QBrush* m_brushes;
+ int m_current_brush;
+};
+
+#endif
+