swing:menus
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swing:menus [2015/05/05 13:09] – created gthanos | swing:menus [Unknown date] (current) – external edit (Unknown date) 127.0.0.1 | ||
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====== Menus & Menu Items ====== | ====== Menus & Menu Items ====== | ||
+ | |||
+ | Το μενού ενός παραθύρου αποτελείται από αντικείμενα των τριών παρακάτω κλάσεων. | ||
+ | * **[[http:// | ||
+ | * **[[http:// | ||
+ | * **Προσοχή: | ||
+ | * **[[http:// | ||
+ | |||
+ | Δείτε το παράδειγμα που παρουσιάστηκε [[swing: | ||
+ | |||
+ | <code java MenuDemo.java> | ||
+ | import javax.swing.*; | ||
+ | import java.awt.*; | ||
+ | import java.awt.event.*; | ||
+ | |||
+ | public class MenuDemo extends JFrame implements ActionListener { | ||
+ | public static final int WIDTH = 400; | ||
+ | public static final int HEIGHT = 250; | ||
+ | | ||
+ | private JPanel redPanel; | ||
+ | private JPanel whitePanel; | ||
+ | private JPanel bluePanel; | ||
+ | | ||
+ | public static void main(String args[]) { | ||
+ | MenuDemo gui = new MenuDemo(); | ||
+ | gui.setVisible(true); | ||
+ | } | ||
+ | | ||
+ | public MenuDemo() { | ||
+ | super(" | ||
+ | setSize(WIDTH, | ||
+ | setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); | ||
+ | setLayout(new BorderLayout()); | ||
+ | | ||
+ | JPanel biggerPanel = new JPanel(); | ||
+ | biggerPanel.setLayout(new GridLayout(1, | ||
+ | | ||
+ | redPanel = new JPanel(); | ||
+ | redPanel.setBackground(Color.LIGHT_GRAY); | ||
+ | biggerPanel.add(redPanel); | ||
+ | | ||
+ | whitePanel = new JPanel(); | ||
+ | whitePanel.setBackground(Color.LIGHT_GRAY); | ||
+ | biggerPanel.add(whitePanel); | ||
+ | | ||
+ | bluePanel = new JPanel(); | ||
+ | bluePanel.setBackground(Color.LIGHT_GRAY); | ||
+ | biggerPanel.add(bluePanel); | ||
+ | | ||
+ | add(biggerPanel, | ||
+ | | ||
+ | JMenu colorMenu = new JMenu(" | ||
+ | colorMenu.setBackground(Color.LIGHT_GRAY); | ||
+ | colorMenu.setMnemonic(KeyEvent.VK_C); | ||
+ | | ||
+ | JMenuItem redMenuItem = new JMenuItem(" | ||
+ | redMenuItem.setBackground(Color.RED); | ||
+ | redMenuItem.addActionListener(this); | ||
+ | redMenuItem.setMnemonic(KeyEvent.VK_R); | ||
+ | colorMenu.add(redMenuItem); | ||
+ | | ||
+ | JMenuItem whiteMenuItem = new JMenuItem(" | ||
+ | whiteMenuItem.setBackground(Color.WHITE); | ||
+ | whiteMenuItem.addActionListener(this); | ||
+ | whiteMenuItem.setMnemonic(KeyEvent.VK_W); | ||
+ | colorMenu.add(whiteMenuItem); | ||
+ | | ||
+ | JMenuItem blueMenuItem = new JMenuItem(" | ||
+ | blueMenuItem.setBackground(Color.BLUE); | ||
+ | blueMenuItem.addActionListener(this); | ||
+ | blueMenuItem.setMnemonic(KeyEvent.VK_B); | ||
+ | colorMenu.add(blueMenuItem); | ||
+ | | ||
+ | JMenuBar bar = new JMenuBar(); | ||
+ | bar.add(colorMenu); | ||
+ | setJMenuBar(bar); | ||
+ | | ||
+ | } | ||
+ | | ||
+ | public void actionPerformed(ActionEvent e) { | ||
+ | String menuString = e.getActionCommand(); | ||
+ | if(menuString.equals(" | ||
+ | redPanel.setBackground(Color.RED); | ||
+ | whitePanel.setBackground(Color.LIGHT_GRAY); | ||
+ | bluePanel.setBackground(Color.LIGHT_GRAY); | ||
+ | } | ||
+ | else if(menuString.equals(" | ||
+ | redPanel.setBackground(Color.LIGHT_GRAY); | ||
+ | whitePanel.setBackground(Color.WHITE); | ||
+ | bluePanel.setBackground(Color.LIGHT_GRAY); | ||
+ | } | ||
+ | else if(menuString.equals(" | ||
+ | redPanel.setBackground(Color.LIGHT_GRAY); | ||
+ | whitePanel.setBackground(Color.LIGHT_GRAY); | ||
+ | bluePanel.setBackground(Color.BLUE); | ||
+ | } | ||
+ | } | ||
+ | } | ||
+ | </ | ||
+ | |||
+ | ===== Menu μέσα σε Menu ===== | ||
+ | |||
+ | Παρακάτω δίνεται ένα παράδειγμα όπου έχουμε Menu μέσα σε Menu. | ||
+ | |||
+ | <code java SubmenuEx.java> | ||
+ | import java.awt.EventQueue; | ||
+ | import java.awt.event.ActionEvent; | ||
+ | import java.awt.event.ActionListener; | ||
+ | import javax.swing.ImageIcon; | ||
+ | import javax.swing.JFrame; | ||
+ | import javax.swing.JMenu; | ||
+ | import javax.swing.JMenuBar; | ||
+ | import javax.swing.JMenuItem; | ||
+ | |||
+ | |||
+ | public class SubmenuEx extends JFrame { | ||
+ | |||
+ | public SubmenuEx() { | ||
+ | | ||
+ | initUI(); | ||
+ | } | ||
+ | |||
+ | private void initUI() { | ||
+ | |||
+ | createMenuBar(); | ||
+ | |||
+ | setTitle(" | ||
+ | setSize(360, | ||
+ | setLocationRelativeTo(null); | ||
+ | setDefaultCloseOperation(EXIT_ON_CLOSE); | ||
+ | } | ||
+ | | ||
+ | private void createMenuBar() { | ||
+ | | ||
+ | JMenuBar menubar = new JMenuBar(); | ||
+ | | ||
+ | ImageIcon iconNew = new ImageIcon(" | ||
+ | ImageIcon iconOpen = new ImageIcon(" | ||
+ | ImageIcon iconSave = new ImageIcon(" | ||
+ | ImageIcon iconExit = new ImageIcon(" | ||
+ | |||
+ | JMenu fileMenu = new JMenu(" | ||
+ | |||
+ | JMenu impMenu = new JMenu(" | ||
+ | |||
+ | JMenuItem newsfMi = new JMenuItem(" | ||
+ | JMenuItem bookmMi = new JMenuItem(" | ||
+ | JMenuItem mailMi = new JMenuItem(" | ||
+ | |||
+ | impMenu.add(newsfMi); | ||
+ | impMenu.add(bookmMi); | ||
+ | impMenu.add(mailMi); | ||
+ | |||
+ | JMenuItem newMi = new JMenuItem(" | ||
+ | JMenuItem openMi = new JMenuItem(" | ||
+ | JMenuItem saveMi = new JMenuItem(" | ||
+ | |||
+ | JMenuItem exitMi = new JMenuItem(" | ||
+ | exitMi.setToolTipText(" | ||
+ | |||
+ | exitMi.addActionListener(new ActionListener() { | ||
+ | @Override | ||
+ | public void actionPerformed(ActionEvent event) { | ||
+ | System.exit(0); | ||
+ | } | ||
+ | }); | ||
+ | |||
+ | fileMenu.add(newMi); | ||
+ | fileMenu.add(openMi); | ||
+ | fileMenu.add(saveMi); | ||
+ | fileMenu.addSeparator(); | ||
+ | fileMenu.add(impMenu); | ||
+ | fileMenu.addSeparator(); | ||
+ | fileMenu.add(exitMi); | ||
+ | |||
+ | menubar.add(fileMenu); | ||
+ | |||
+ | setJMenuBar(menubar); | ||
+ | } | ||
+ | | ||
+ | public static void main(String[] args) { | ||
+ | | ||
+ | EventQueue.invokeLater(new Runnable() { | ||
+ | @Override | ||
+ | public void run() { | ||
+ | | ||
+ | SubmenuEx ex = new SubmenuEx(); | ||
+ | ex.setVisible(true); | ||
+ | } | ||
+ | }); | ||
+ | } | ||
+ | } | ||
+ | </ | ||
+ | |||
+ | | Προηγούμενο: | ||
+ | |||
swing/menus.1430831341.txt.gz · Last modified: 2015/05/05 12:09 (external edit)