[Qt-creator] how to show an image in graphics view

[john smith]

Hello,

It is the first time that I am using classes, I am not keen on using Qt
documentation and I am trying to make my first application. well I am using
a toolbar and a graphics view, and I want to push the button of the toolbar
and show the image in the graphics view. But I have a problem in how to
handle the classes. So far I have written the following code but I do not
know what to type on the highlighted area. Is there anyone who could help
me?

Thanks in advance

////////////// main.cpp ////////////////
#include "open_image.h"
#include <QtGui/QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    open_image w;
    w.show();
    return a.exec();
}

////////// open_image.cpp ///////////
#include "open_image.h"

open_image::open_image(QWidget *parent, Qt::WFlags flags)
    : QMainWindow(parent, flags)
{
    setupUi(this);
    QObject::connect(action_Open_File, SIGNAL(triggered()), this,
SLOT(doThingA()));
}

open_image::~open_image()
{

}

void open_image::doThingA(void)
{
    graphicsView->

}



//////////////// open_image.h //////////////////
#ifndef OPEN_IMAGE_H
#define OPEN_IMAGE_H

#include <QtGui/QMainWindow>
#include "ui_open_image.h"

class open_image : public QMainWindow, private Ui::open_imageClass
{
    Q_OBJECT

public:
    open_image(QWidget *parent = 0, Qt::WFlags flags = 0);
    ~open_image();

private:
    Ui::open_imageClass ui;


private slots:
   void doThingA(void);

};

#endif // OPEN_IMAGE_H
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