第一个QT例子

#include
#include
#include
#include
#include
#include

#include "hello.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTextCodec::setCodecForTr(QTextCodec::codecForLocale());
    QWidget* pWidget = new QWidget;
    QLabel label(pWidget);
    label.setText(QObject::tr("同一个世界，同一个梦想！"));
    QPushButton* btn = new QPushButton(QObject::tr("关闭"),pWidget);
    QVBoxLayout* layout = new QVBoxLayout;
    layout->addWidget(&label);
    layout->addWidget(btn);
    pWidget->setLayout(layout);

    QObject::connect(btn,SIGNAL(clicked()),pWidget,SLOT(close()));

    pWidget->show();
    return app.exec();
    //hello w;
    //w.show();
}