Microsoft Foundation Classes (mfc.hlp) (Table of Contents; Topic list)
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System Message Handlers
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  The following message handlers require an entry in a message map.
 
  ◄OnSysChar►          Called when a keystroke translates to a system
                       character.
 
  ◄OnSysCommand►       Called when the user selects a command from the
                       Control menu, or when the user selects the Maximize
                       or Minimize button.
 
  ◄OnSysDeadChar►      Called when a keystroke translates to a system dead
                       character (such as accent characters).
 
  ◄OnSysKeyDown►       Called when the user holds down the ALT key and
                       then presses another key.
 
  ◄OnSysKeyUp►         Called when the user releases a key that was
                       pressed while the ALT key was held down.
 
  ◄OnCompacting►       Called when Windows detects that system memory is
                       low.
 
  ◄OnDevModeChange►    Called for all top-level windows when the user
                       changes device-mode settings.
 
  ◄OnFontChange►       Called when the pool of font resources changes.
 
  ◄OnPaletteChanged►   Called to allow windows that don't have the input
                       focus and use a color palette to realize their
                       logical palettes and update their client areas.
 
  ◄OnSpoolerStatus►    Called from Print Manager whenever a job is added
                       to or removed from the Print Manager queue.
 
  ◄OnSysColorChange►   Called for all top-level windows when a change is
                       made in the system color setting.
 
  ◄OnTimeChange►       Called for all top-level windows after the system
                       time changes.
 
  ◄OnWinIniChange►     Called for all top-level windows after the Windows
                       initialization file, WIN.INI, is changed.
 
 
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