Listener in Document

I wave a Listener in my Document return a EventObject.. i want to 
intercept the event and "stop" the event if the user type "f" , it is 
possible ?
In Java the listener returns the KEY typed in JTextArea , i compare with 
"f" and call event.consume()... exists way in OpenOffice SDK to do this ?



Tnks in advance !

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++  Dyego Souza Dantas Leal   ++           Dep. Desenvolvimento   
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