How to ignore any input on the component

i want to make a JFrame Container ignore all input event (ie. key, mouse) until "start" button is pressed .
for example , there are button on the Container. but these buttons are prevented from be pressed until "Start" button is pressed.
i want to implement those function not using setEnabled(false) method. because it makes button's shape changed.
Actually what i try to make is a game that blocks all the input from user until game is started .
any comment will be helpful.
thank you

Try using a [url http://java.sun.com/docs/books/tutorial/uiswing/components/rootpane.html]Glass Pane.

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