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#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> #include <QFile> class QTextEdit; class MainWindow : public QMainWindow { Q_OBJECT public: MainWindow(QWidget *p...

#ifndef WIDGET_H #define WIDGET_H #include <QWidget> #include <QLineEdit> class Widget : public QWidget { Q_OBJECT public: Widget(QWidget *parent = 0); ~Widget(); public slo...