Returns the display which the given thread is the
user-interface thread for, or null if the given thread
is not a user-interface thread for any display. Specifying
<code>null</code> as the thread will return <code>null</code>
for the display.
@param thread the user-interface thread
@return the display for the given thread
Returns the display which the given thread is the user-interface thread for, or null if the given thread is not a user-interface thread for any display. Specifying <code>null</code> as the thread will return <code>null</code> for the display.
@param thread the user-interface thread @return the display for the given thread