7_3.cpp

一个qt设计的教程

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

class MyMainWindow:public QWidget
{
 public:
    MyMainWindow();
 private:
    QGroupBox *groupbox;
    QLabel *label;
};

MyMainWindow::MyMainWindow()
{
 setGeometry(100,100,150,100);
 
 groupbox = new QGroupBox(this);
 groupbox->setGeometry(10,10,130,80);
 groupbox->setTitle("A Group BOx");

 label = new QLabel(this);
 label->setGeometry(30,35,90,40);
 label->setText("Add widgets\n here!");
 label->setAlignment(AlignHCenter|AlignVCenter);
}

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

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