C++ FORMAT D'IMAGE AVEC QT

/************** Crypt.h ***************/

#ifndef HEADER_CRYPT
#define HEADER_CRYPT


#include <QtGui>
#include <QSettings>

class Crypt : public QMainWindow
{

Q_OBJECT

public:

Crypt();

void creerObjets();
void creerMenus();
void creerActions();
void creerConnexions();

private slots:

void ouvrir();
void enregistrer();
private:


QMenu *m_menuFichier;
QLabel label;
QVBoxLayout *all;
QWidget *centre;
QAction *m_actQuitter;
QAction *m_actOuvrir;
QAction *m_actEnregistrer;
QString m_chemin;
};


#endif


/********** Crypt.cpp ************/



#include "Crypt.h"
#include <fstream>

Crypt::Crypt()
{
QApplication::setStyle(new QPlastiqueStyle);

creerObjets();
creerMenus();
creerActions();
creerConnexions();

setWindowTitle("Ry-Cryptage");
setWindowState(Qt::WindowMaximized);
setCentralWidget(centre);
}

void Crypt::creerObjets()
{
m_chemin = "#Pas de fichier";
all = new QVBoxLayout;
all->addWidget(&label);
centre = new QWidget;
centre->setLayout(all);
label.setAlignment(Qt::AlignCenter);

}


void Crypt::creerMenus()
{
m_menuFichier = menuBar()->addMenu("&Fichier");

}

void Crypt::creerActions()
{
m_actOuvrir = m_menuFichier->addAction("&Ouvrir");
m_actOuvrir->setShortcut(tr("Ctrl+O"));
m_actEnregistrer = m_menuFichier->addAction("&Enregistrer");
m_actEnregistrer->setShortcut(tr("Ctrl+E"));
m_actQuitter = m_menuFichier->addAction("&Quitter");
m_actQuitter->setShortcut(tr("Ctrl+Q"));
}

void Crypt::creerConnexions()
{
connect(m_actOuvrir, SIGNAL(triggered()), this, SLOT(ouvrir()));
connect(m_actEnregistrer, SIGNAL(triggered()), this, SLOT(enregistrer()));
connect(m_actQuitter, SIGNAL(triggered()), qApp, SLOT(quit()));
}

void Crypt::ouvrir()
{
QString chemin = QFileDialog::getOpenFileName(this, "Ouvrir un fichier...", QString());
QFile file(chemin);
if (!chemin.isEmpty()) {
m_chemin = chemin;
 }

if (m_chemin.right(5) != ".rymg"){
QPixmap z = QPixmap(m_chemin);
QSize size(label.width(), label.height());
QPixmap img1 = z.scaled(size, Qt::KeepAspectRatio);

label.setPixmap(img1);
}
else {


const char *ch = m_chemin.toStdString().c_str();
QSettings *settings = new QSettings(ch, QSettings::IniFormat);
QPixmap image = settings->value("RyIMG").value<QPixmap>();


QSize size(label.width(), label.height());
QPixmap img1 = image.scaled(size, Qt::KeepAspectRatio);
label.setPixmap(img1);
}
}

void Crypt::enregistrer()
{
QString chemin = QFileDialog::getSaveFileName(this, "Enregistrer le fichier", m_chemin, "Image (*.rymg)");
QFile file(chemin);
if(!file.open(QIODevice::WriteOnly))
return;

QPixmap image(m_chemin);
const char *ch = chemin.toStdString().c_str();
QSettings *settings = new QSettings(ch, QSettings::IniFormat);
settings->setValue("RyIMG", image);


}

/********* main.cpp *********/

//POP70

#include <QApplication>
#include "Crypt.h"

int main (int argc, char* argv[])
{

QApplication app (argc, argv);

Crypt *fen = new Crypt;

fen->show();

return app.exec();

}