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📄 main.cpp

📁 Boost provides free peer-reviewed portable C++ source libraries. We emphasize libraries that work
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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)#include "canvas.h"#include <qapplication.h>#include <qvbox.h>#include <qpushbutton.h>class Window : public QMainWindow{public:    Window()    {        setCaption("QCanvas test");        QVBox* vb = new QVBox(this);        setCentralWidget(vb);               Canvas* c = new Canvas(vb);         QPushButton* b = new QPushButton("Change color", vb);        connect(b, SIGNAL(clicked()), c, SLOT(change_color()));     }        };int main(int argc, char **argv){    QApplication app(argc, argv);    Window *w = new Window();    app.setMainWidget(w);    w->show();        return app.exec();}

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