6_5.cpp

一个qt设计的教程

#include <qapplication.h>
#include <qlcdnumber.h>

class MyMainWindow:public QWidget
{
 public:
    MyMainWindow();
 private:
    QLCDNumber *number;
};

MyMainWindow::MyMainWindow()
{
 setGeometry(100,100,170,100);

 number = new QLCDNumber(this);
 number->setGeometry(10,10,150,80);
 number->display(12345);
}

main(int argc,char **argv)
{
 QApplication a(argc,argv);
 MyMainWindow w;

 a.setMainWidget(&w);
 w.show();
 a.exec();
}