1 MainWindow::MainWindow(QWidget *parent) :
 2     QMainWindow(parent),
 3     ui(new Ui::MainWindow)
 4 {
 5     ui->setupUi(this);
 6     //設置最小大小
 7     this->setMinimumSize(200,100);
 8 
 9     QPushButton *push=new QPushButton("quit",this);
10     //設置大小和位置
11     push->setGeometry(64,40,76,33
 
);
12     //設置字體
13     push->setFont(QFont("Times",25,QFont::Bold));
14     //程序結構
15     connect(push,SIGNAL(clicked(bool)),qApp,SLOT(quit()));
16 }

10.QT程序框架與connect