QT图片轮播器实现方法二(QT实操2)

1.项目架构

1.UI界面

2.widget.h​

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QTimer>

#define TIMEOUT 1 * 1000
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

private slots:
    void on_startButton_clicked();
    void timeoutSlot();


    void on_stopButton_clicked();

    void on_singleButton_clicked();

private:
    Ui::Widget *ui;
    QTimer *timer;
    int picId;
};
#endif // WIDGET_H

3.main.cpp​

#include "widget.h"

#include <QApplication>

int main(int argc, char