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分享http://v.youku.com/v_show/id_XMTA1NDEzODUy.html的视频教程,#include <QApplication>
#include <QPushButton>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QPushButton *button = new QPushButton("Quit");
QObject::connect(button, SIGNAL(clicked()),
&app, SLOT(quit()));
button->show();
return app.exec();
}