QT小滑块

原文链接： https://yq.aliyun.com/articles/38724

主代码：

QWidget *window= new  QWidget();
    window->setWindowTitle( "hello" );
    QSpinBox *spinBox= new  QSpinBox();
    QSlider *slider= new  QSlider(Qt::Horizontal);
    spinBox->setRange(100,1000);
    slider->setRange(100,1000);
    spinBox->setValue(100);

    QObject::connect(slider,SIGNAL(valueChanged( int )),spinBox,SLOT(setValue( int )));
    QObject::connect(spinBox,SIGNAL(valueChanged( int )),slider,SLOT(setValue( int )));

    QHBoxLayout *layout= new  QHBoxLayout();
    layout->addWidget(spinBox);
    layout->addWidget(slider);
    window->setLayout(layout);
    window->show();
    return  a.exec();