qt5base-lts/tests/manual/qlayout/mainwindow.h

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#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

class QGridLayout;

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();

private slots:
    void layoutIndexChanged(int index);

private:
    QGridLayout *m_mainLayout;
};

#endif // MAINWINDOW_H