Tk_HandleEvent(3) Tk Library Procedures Tk_HandleEvent(3) 







Tk_HandleEvent - invoke event handlers for window system
  events








#include <tk.h>

Tk_HandleEvent(eventPtr)









  
XEvent *eventPtr (in)

  
Pointer to X event to dispatch to relevant handler(s). It is important
      that all unused fields of the structure be set to zero.
    
    

    

  










Tk_HandleEvent is a lower-level procedure that deals with
    window events. It is called by Tcl_ServiceEvent (and indirectly by
    Tcl_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.










callback, event, handler, window







  

    
    Tk