Qt之QSlider和QProgressBar

实验结果

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);

    connect(ui->dial,&QDial::valueChanged,this,&Widget::do_valueChanged);
    connect(ui->horizontalScrollBar,&QScrollBar::valueChanged,this,&Widget::do_valueChanged);
    connect(ui->horizontalSlider,&QSlider::valueChanged,this,&Widget::do_valueChanged);
}

Widget::~Widget()
{
    delete ui;
}

void Widget::do_valueChanged(int value)
{
    ui->progressBar->setValue(value);
}

void Widget::on_checkTextVisable_clicked(bool checked)
{
    ui->progressBar->setTextVisible(checked);
}

void Widget::on_checkiverterapper_clicked(bool checked)
{
    ui->progressBar->setInvertedAppearance(checked);
}

void Widget::on_radiopercentage_clicked()
{
    ui->progressBar->setFormat("%p%");
}

void Widget::on_radioButton_2_clicked()
{
    ui->progressBar->setFormat("%v");
}

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();
private slots:
    void do_valueChanged(int value);
    void on_checkTextVisable_clicked(bool checked);

    void on_checkiverterapper_clicked(bool checked);

    void on_radiopercentage_clicked();

    void on_radioButton_2_clicked();

private:
    Ui::Widget *ui;
};

#endif // WIDGET_H