oWin:keyDown( <nKey>, <nKeyFlag> ) -> <nil>

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 PARAMETER:

   <nKey>      The value of the pressed key

   <nKeyFlags> Keyboard status


 DESCRIPTION:

  This method handles all WM_KEYxxx messages that Windows sends to
  our window. They are sent when a window has keyboard focus and when a 
  NON-SYSTEM key ( without the <Alt> key ) is pressed. 

  ::KeyDown() handles keys like VK_TAB ( to move the controls
  input focus ) or VK_F1 ( to call ::HelpTopic() ).
  Then the bKeyDown block is evaluated with <nKey> and <nKeyFlag>                                        
  as arguments

  Please press  Related Topics:  and select  WM_KEY  for detailed 
  informations about the Topic and the parameters


  HINTS:

   This method is 'lower' than the ::keyChar() method, in that
   it handles all keys on al lower level. With ::keyDown() you can
   actually check if the key '1' was pressed on the number pad on the
   top row by looking at the VK_ code of nKey and the nKeyflags.
   So this method checks the actual physical keys, and also handles keys
   like the arrow keys, which ::KeyChar() does not !
   
   If you are only looking for a pressed '1' key, then you should use 
   the ::KeyChar()message with it's bKeyChar eventblock.


 !seealso:"wm.eho:WM_KEY" "bKeyDown" "KeyChar"