private JFrame getJFrame() {
		if (jFrame == null) {
			jFrame = new JFrame();
			if(ihm.macOS) {
				jFrame.setSize(new Dimension(900, 30*Interface.CODES.values().length));
			}
			else {
				jFrame.setSize(new Dimension(900, 37*Interface.CODES.values().length));
			}
			if(!this.decrypte) {
				jFrame.setTitle("Cryptage");
			}
			else {
				jFrame.setTitle("Dcryptage");
			}
			jFrame.setResizable(false);
			jFrame.setJMenuBar(getMenu());
			jFrame.setContentPane(getJContentPane());
			jFrame.setLocationRelativeTo(vide1);
			jFrame.getRootPane().setDefaultButton(getButOK());
			jFrame.addWindowListener(new java.awt.event.WindowAdapter() {
				public void windowClosing(java.awt.event.WindowEvent e) {
					System.exit(0);
				}
			});
		}
		return jFrame;
	}