#include <QApplication>
#include <QMainWindow>
#include <QStatusBar>
#include <QPushButton>
#include <QLabel>
class MainWindow : public QMainWindow {
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr) : QMainWindow(parent) {
// 创建一个标签并将其添加到状态栏
statusLabel = new QLabel("Ready", this);
statusBar()->addWidget(statusLabel);
// 创建一个按钮
QPushButton *button = new QPushButton("Show Message", this);
connect(button, SIGNAL(clicked()), this, SLOT(showMessage()));
setCentralWidget(button);
}
private slots:
void showMessage() {
statusBar()->showMessage("Button clicked", 3000); // 显示消息，持续时间为3秒
}
private:
QLabel *statusLabel;
};
#include "main.moc"
int main(int argc, char *argv[]) {
QApplication app(argc, argv);
MainWindow mainWindow;
mainWindow.show();
return app.exec();
}
