5_2.cpp

一个qt设计的教程

#include <qapplication.h>
#include <qpushbutton.h>
#include <qfont.h>
#include <qmultilineedit.h>
#include <qscrollview.h>
#include <qwidget.h>

class MyMainWindow:public QScrollView
{
 public:
    MyMainWindow();
 private:
    QWidget *main;
    QPushButton *b1;
    QPushButton *b2;
    QPushButton *b3;
    QPushButton *b4;
    QPushButton *b5;
    QMultiLineEdit *edit1;
};

MyMainWindow::MyMainWindow()
{
 setGeometry(100,100,470,410);
 
 main = new QWidget(this);
 main->resize(460,400);

 b1 = new QPushButton("New",main);
 b1->setGeometry(10,10,80,30);
 b1->setFont(QFont("Times",18,QFont::Bold));

 b2 = new QPushButton("Open",main);
 b2->setGeometry(100,10,80,30);
 b2->setFont(QFont("Times",18,QFont::Bold));

 b3 = new QPushButton("Save",main);
 b3->setGeometry(190,10,80,30);
 b3->setFont(QFont("Times",18,QFont::Bold));


 b4 = new QPushButton("Print",main);
 b4->setGeometry(280,10,80,30);
 b4->setFont(QFont("Times",18,QFont::Bold));

 b5 = new QPushButton("Quit",main);
 b5->setGeometry(370,10,80,30);
 b5->setFont(QFont("Times",18,QFont::Bold));

 edit1 = new QMultiLineEdit(main);
 edit1->setGeometry(0,50,440,340);
 edit1->setText("Let's pretend this is a text editor.");
 //we must call the QScrollView::addChild function for each of its child widgets.
 addChild(main);
}

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

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