oWin:destroy() -> nil / .T.

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 DESCRIPTION:

  This 'destructor' Method destroys the window, the embedded objects
  oBrush, oCursor, oIcon, oFont, oMenu, oSysMenu, oVScroll, oHScroll
  and the handling of Drag-and-Drop if it was installed.

  If called for a dialog box, ::destroy() will return a TRUE if
  the dialog was modal.

  ::destroy() should NOT be called directly, if you want to end a 
  window's life call the End() method.

  If the window is closed then the code behind the activation sequence
  will be executed. In a main window this will normally be the exit of
  the applikation.