Qt里的spin控件

#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>
#include <QLabel>

int main(int argc, char *argv[])
{    
    QApplication app(argc, argv);

    QWidget *window = new QWidget;
    window->setWindowTitle("Enter Your Age");//标题显示:输入你的年龄

    QSpinBox *spinBox = new QSpinBox;
    QSlider *slider = new QSlider(Qt::Horizontal);//滑块组件
    spinBox->setRange(0, 130);//设置各自的取值范围
    slider->setRange(0, 130);

    //滑块和Spin组件的值的变化都会对应的改变
    QObject::connect(spinBox, SIGNAL(valueChanged(int)),
                                     slider, SLOT(setValue(int)));
    QObject::connect(slider, SIGNAL(valueChanged(int)),
                                     spinBox, SLOT(setValue(int)));
                                        
    spinBox->setValue(35);//注意这里的设置也会影响slider

    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinBox);
    layout->addWidget(slider);
    
    QLabel* label=new QLabel("your age:");
    
    QVBoxLayout* mainLayout=new QVBoxLayout;
    mainLayout->addWidget(label);
    mainLayout->addLayout(layout);
    
    window->setLayout(mainLayout);

    window->resize(300,50);
    window->show();

    return app.exec();
}    

 

截图: