Can i remap a button on the keyboard? (trying to support copy/paste on mac)

Question

my app runs cross-platform, and on the mac os x, copy/pasting is accomplished via ctrl+c/v, when the native os wants to use cmd-c/v. (ie in order to copy from a browser and paste into my java app, the user would have to press cmd-c to copy from the mac environment and then ctrl-v to paste into the java environment.)
i'd like to have copy/paste behave the way mac users are expecting (pressing cmd vice ctrl). at the moment, my app supports OS functions like cmd-w (close window), cmd-q (quit), and cmd-h (hide) via a few import classes from apple. they neglect to provide the same support for copy/pasting.
so. how can i init my java environment so that if a user presses the cmd key, java behaves as if they are pressing the ctrl key?
thanks!

Answer 1

ok, tested it. seems that under metal and the L&F i'm using (which is based on metal as far as i know), pasting is accomplished via ctrl-v.
if i set the L&F to the system L&F while running in a mac os, pasting is accomplished via cmd-c (meta-c?).
so that's that.
i asked google for help with the shortcutKeyMask, and this turned up on an apple site:
Accelerators (Keyboard Shortcuts)
Do not set menu item accelerators with an explicit javax.swing.KeyStroke specification. Modifier keys vary from platform to platform. Instead, use java.awt.Tookit.getMenuShortcutKeyMask to ask the system for the appropriate key rather than defining it yourself.
When calling this method, the current platform�s Toolkit implementation returns the proper mask for you. This single call checks for the current platform and then guesses which key is correct. In the case of adding a Copy item to a menu, using getMenuShortcutKeyMask means that you can replace the complexity of �The Contents of an Application Bundle� with the simplicity of Listing 2.
Listing 1  Explicitly setting accelerators based on the host platform
JMenuItem jmi = new JMenuItem("Copy");
    String vers = System.getProperty("os.name").toLowerCase();
    if (s.indexOf("windows") != -1) {
       jmi.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, Event.CTRL_MASK));
    } else if (s.indexOf("mac") != -1) {
       jmi.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, Event.META_MASK));
Listing 2  Using getMenuShortcutKeyMask to set modifier keys
JMenuItem jmi = new JMenuItem("Copy");
jmi.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,
    Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
The default modifier key in Mac OS X is the Command key. There may be additional modifier keys like Shift, Option, or Control, but the Command key is the primary key that alerts an application that a command, not regular input follows. Note that not all platforms provide this consistency in user interface behavior. When assigning keyboard shortcuts to items for menu items, make sure that you are not overriding any of the keyboard commands Macintosh users are accustomed to. See Apple Human Interface Guidelines for the definitive list of the most common and reserved keyboard shortcuts (keyboard equivalents).
okay... but uh... i don't quite get it. seems that this Listing 2 solution might work, but a) this is for a menu and b) i'd like this to be a global setting if at all possible. my concern is when i use something like this:
JOptionPane.showInputDialog(jframe,
                                          "please enter some text",
                                          "input dialog",
                                          JOptionPane.OK_OPTION);i want this to be paste-able too!
thanks!