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gpm: hl-Variables

 
 4.3.2 Variables
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 'Gpm_Roi* gpm_roi'
      The linked list of regions (pointer to the top one).
 
 'Gpm_Roi* gpm_current_roi'
      The region which got the last event (used to generate enter and
      leave events).
 
 'Gpm_Handler* gpm_roi_handler'
      This variable is meant to be set by the user.  It is the catch-all
      region of interest, which will be called for any mouse event not
      falling within any registered region.  If NULL, the event will be
      discarded.
 
 'void* gpm_roi_data'
      the client data to be passed to 'gpm_roi_handler'.
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