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HandleEvent (3)
  • >> HandleEvent (3) ( Solaris man: Библиотечные вызовы )
  • 
    _________________________________________________________________
    
    NAME
         Tk_HandleEvent - invoke event  handlers  for  window  system
         events
    
    SYNOPSIS
         #include <tk.h>
    
         Tk_HandleEvent(eventPtr)
    
    ARGUMENTS
         XEvent   *eventPtr   (in)      Pointer   to   X   event   to
                                        dispatch      to     relevant
                                        handler(s).
    _________________________________________________________________
    
    
    DESCRIPTION
         Tk_HandleEvent is a lower-level procedure  that  deals  with
         window  events.   It  is  called  by  Tcl_ServiceEvent  (and
         indirectly by Tk_DoOneEvent),  and  in  a  few  other  cases
         within  Tk.  It makes callbacks to any window event handlers
         (created  by  calls  to  Tk_CreateEventHandler)  that  match
         eventPtr  and  then returns.  In some cases it may be useful
         for an application to bypass the Tk  event  queue  and  call
         Tk_HandleEvent  directly  instead  of calling Tcl_QueueEvent
         followed by Tcl_ServiceEvent.
    
         This procedure may be invoked recursively.  For example,  it
         is  possible  to  invoke  Tk_HandleEvent  recursively from a
         handler called by Tk_HandleEvent.  This sort of operation is
         useful in some modal situations, such as when a notifier has
         been popped up and an application wishes  to  wait  for  the
         user to click a button in the notifier before doing anything
         else.
    
    
    KEYWORDS
         callback, event, handler, window
    
    
    
    


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