Re: JOptionPane display on a KeyListener

From:

"Atif" <atifman@gmail.com>

Newsgroups:

comp.lang.java.help

Date:

11 Jun 2006 12:10:01 -0700

Message-ID:

<1150053001.228468.276800@i40g2000cwc.googlegroups.com>

What happened when you tried to put: "
JOptionPane.showMessageDialog(frame,
     "Only numbers please.",
     "Inane error",
     JOptionPane.ERROR_MESSAGE);"
into your keyTyped() method? is the name of your JFrame frame?

What you could try doing is,

make a JOptionPane instance: jop
make a separate JDialog instance: jdi
use:
    jdi.SetContentPane(jop)
and
    jdi.pack() //(see API for JDialog)

then in "keyTyped()"
use:
    jdi.setVisible(True);

ButtonNovice wrote:

Anybody know how to make a JOptionPane display on this KeyListener?

//Here is the KeyListener

    balanceJTextField.addKeyListener(new KeyAdapter()

      {
       public void keyTyped(KeyEvent e)
       {
            char c = e.getKeyChar();
              if (!((c >= '0') && (c <= '9') || (c == '.')||
                 (c == KeyEvent.VK_BACK_SPACE) ||
                 (c == KeyEvent.VK_DELETE)))
                 {
                e.consume();

             }
       }
      });

// Attempting to get this to display:

   JOptionPane.showMessageDialog(frame,
    "Only numbers please.",
    "Inane error",
    JOptionPane.ERROR_MESSAGE);