QT学习笔记之一 Age

#include <QtGui/QApplication>
#include<QSpinBox>
#include<QSlider>
#include<QHBoxLayout>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
//创建一个小窗体部件
QWidget *widget=new QWidget;
widget->setWindowTitle("input your age");
//创建一个QSpinBox，并设置范围0-130
QSpinBox *spinBox=new QSpinBox;
spinBox->setRange(0,130);
//创建一个QSlider，并设置范围0-130
QSlider *slider=new QSlider(Qt::Horizontal);
slider->setRange(0,130);
//设置信号和槽
QObject::connect(spinBox,SIGNAL(vauleChanged(int)),slider,SLOT(setValue(int)));
QObject::connect(slider,SIGNAL(valueChanged(int)),spinBox,SLOT(setValue(int)));
//初始值
spinBox->setValue(0);
//布局设置
QHBoxLayout *layout=new QHBoxLayout;
layout->addWidget(spinBox);
layout->addWidget(slider);
widget->setLayout(layout);
widget->show();
return a.exec();
}