On-screen keypad launches automatically for every installed MIDlet, but user is able to change On-screen keypad visibility from the application manager setting. Possible values are "off", "Navigation keys only" and "Game and navigation keys". The setting is application specific and thus can be defined differently for every installed MIDlet suite. The state of on-screen keypad is defined by using a JAD parameter "Nokia-MIDlet-On-Screen-Keypad", its possible values are "no", "gameactions" and "navigationkeys".

Nokia-MIDlet-On-Screen-Keypad: no
Nokia-MIDlet-On-Screen-Keypad: gameactions
Nokia-MIDlet-On-Screen-Keypad: navigationkeys

Three possible on-screen keypad settings:

  * No keypad
  * Navigation keys keypad: game actions UP, DOWN, LEFT, RIGHT and FIRE
  * Game actions keypad: game actions UP, DOWN, LEFT, RIGHT, FIRE, GAME_A, GAME_B GAME_C and GAME_D 

reference: http://wiki.forum.nokia.com/index.php/Using_on-screen_keypad_in_MIDlets_in_S60_5th_Edition_devices

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