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main.cpp:
#include <QApplication> #include "mainwindow.h" int main(int argc, char *argv[]) { QApplication a(argc, argv); MainWindow w; w.show(); return a.exec(); }
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mainwindow.h:
#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> class MainWindow : public QMainWindow { Q_OBJECT public: MainWindow(QWidget *parent = nullptr); ~MainWindow(); void handleButton(); private: QPushButton *button; }; #endif // MAINWINDOW_H
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mainwindow.cpp:
#include "mainwindow.h" #include <QPushButton> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) { button = new QPushButton("Click me", this); connect(button, &QPushButton::clicked, this, &MainWindow::handleButton); } MainWindow::~MainWindow() { } void MainWindow::handleButton() { button->setText("Clicked!"); }
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