Qt初试

Qt Creator中创建一个简单应用界面，显示一个spinbox、一个silder，一个TextEdit，textEidt中显示date。


#include "mainwindow.h"
#include <QApplication>
#include <QHBoxLayout>
#include <QPushButton>
#include<QSlider>
#include <QSpinBox>
#include <QDateTime>
#include <QTextEdit>
#include <QTime>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget *window = new QWidget();
    window->setWindowTitle("Enter your age:");
    QSlider *slider = new QSlider(Qt::Horizontal);
    slider->setRange(0,100);

    QSpinBox *spinBox =  new  QSpinBox();
    spinBox->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(5);

    QDate *date = new QDate(2015,8,10);
    QTextEdit *text = new QTextEdit();
    text->setText(date->toString());

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