test.cpp

来自「qt 固定框架」· C++ 代码 · 共 47 行

#include<qapplication.h>
#include<qwidget.h>

#include<qpushbutton.h>
#include<qfont.h>

#include<qlabel.h>

class MyMainWin:public QWidget
{
  public:
    MyMainWin();
    private:
    QPushButton *b1;
    QLabel *label;
};

MyMainWin::MyMainWin()
{
//setMinimumSize(200,120);    
//setMaximumSize(400,240); 
    
    setGeometry(100,100,200,120);
   // b1=new QPushButton("Button 1",this);
    b1=new QPushButton("Quit	",this);
    b1->setGeometry(20,20,160,80);
    b1->setFont(QFont("Times",18,QFont::Bold),true);
    
    label=new QLabel(this);
    label->setGeometry(20,110,180,50);
    label->setText("If you click the buttonabove,\n
		  the whole program will exit! ");
    label->setAlignment(AlignCenter);
    
    connect(b1,SIGNAL(clicked()),qApp,SLOT(quit()));
}

int main(int argc,char **argv)
{
   QApplication a(argc,argv); 
    MyMainWin w;
    a.setMainWidget(&w);
    w.show();
    a.exec();
    
}