6_1.cpp

一个qt设计的教程

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

class MyMainWindow:public QWidget
{
 public:
    MyMainWindow();
 private:
    QPushButton *b1;
};

MyMainWindow::MyMainWindow()
{
 setGeometry(100,100,200,100);
 
 b1 = new QPushButton("This is a push button!",this);
 b1->setGeometry(10,10,180,80);
 b1->setFont(QFont("Times",16,QFont::Bold));
}

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

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