Java检测jtree上的CTRL+X组合键

I need an example how to add a keyboard handler that detect when Ctrl+C , Ctrl+X , Ctrl+C pressed on a JTree.

我需要一个如何添加一个键盘处理程序的例子，当Ctrl+C, Ctrl+X, Ctrl+C按在JTree上时，它可以检测。

I were do this before with menu shortcut keys but with no success.

我以前用菜单快捷键做过这个，但是没有成功。

5 个解决方案

#1

You can add KeyListeners to any component (f)

可以向任何组件(f)添加关键监听器

        f.addKeyListener(new KeyListener() {

            @Override
            public void keyTyped(KeyEvent e) {
            }

            @Override
            public void keyPressed(KeyEvent e) {
                if ((e.getKeyCode() == KeyEvent.VK_C) && ((e.getModifiers() & KeyEvent.CTRL_MASK) != 0)) {
                    System.out.println("woot!");
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {
            }
        });

#2

Use KeyListener for example :

例如，使用KeyListener:

jTree1.addKeyListener(new java.awt.event.KeyAdapter() {

        public void keyPressed(java.awt.event.KeyEvent evt) {
            if (evt.isControlDown() && evt.getKeyCode() == KeyEvent.VK_C) {

                JOptionPane.showMessageDialog(this, "ctrl + c");

            } else if (evt.isControlDown() && evt.getKeyCode() == KeyEvent.VK_X) {

                JOptionPane.showMessageDialog(this, "ctrl + x");

            } else if (evt.isControlDown() && evt.getKeyCode() == KeyEvent.VK_V) {

                JOptionPane.showMessageDialog(this, "ctrl + v");

            }
        }
    });

Hope that helps.

希望有帮助。

#3

Use Key Bindings.

使用键绑定。

#4

    initComponents();
      KeyboardFocusManager ky=KeyboardFocusManager.getCurrentKeyboardFocusManager();

    ky.addKeyEventDispatcher(new KeyEventDispatcher() {

        @Override
        public boolean dispatchKeyEvent(KeyEvent e) {

             if (e.getID()==KeyEvent.KEY_RELEASED && (e.getKeyCode() == KeyEvent.VK_C) && ((e.getModifiers() & KeyEvent.CTRL_MASK) != 0)) {
                System.out.println("Dhanushka Tharindu");
            }
             return  true;
        }
    });

#5

But menu shortcut accelerators are the way to do this normally: myMenuItem.setAccelerator(KeyStroke.getKeyStroke("control C"));

但是菜单快捷键加速器是实现这一点的常用方法:myMenuItem.setAccelerator(击键)。getKeyStroke(控制C));

#1