C++备忘-QT(2)

#include <QApplication>

#include <QHBoxLayout>

#include <QSlider>

#include <QSpinBox>

//滑动条

int main(int argc, char *argv[])

{

    QApplication app(argc, argv);

    QWidget *window =new QWidget;

    window->setWindowTitle("测试");

    QSpinBox *spinbox=new QSpinBox;

    QSlider *slider=new QSlider(Qt::Horizontal);

    spinbox->setRange(0,100);

    slider->setRange(0,100);

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

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

    spinbox->setValue(100);

    slider->setValue(100);

    QHBoxLayout *layout=new QHBoxLayout;

    layout->addWidget(spinbox);

    layout->addWidget(slider);

    window->setLayout(layout);

    window->show();

    return app.exec();

}