Qt GUI

#include "mainwindow.h"#include <QApplication>#include <QWidget>#include <QLabel>#include <QtCore/QTextCodec>int main(int argc, char *argv[]){    QApplication app(argc,argv);    QTextCodec::setCodecForLocale(QTextCodec::codecForName("gb18030"));    QWidget* pWidget=new QWidget;    QLabel label(pWidget);    label.setText(QObject::tr("同一个世界,同一个梦想！"));    //label.setBaseSize(300,400);    pWidget->setWindowTitle("第一个GUI程序");    pWidget->show();    return app.exec();}

如下图所示: