12-09-2003
default comes when the i does not match any of the specified values given in the cases that is 1 and/or 2
Regards
JK
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LEARN ABOUT DEBIAN
tk_handleevent
Tk_HandleEvent(3tk) Tk Library Procedures Tk_HandleEvent(3tk)
__________________________________________________________________________________________________________________________________________________
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). It is important that all unused fields of the struc-
ture be set to zero.
_________________________________________________________________
DESCRIPTION
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_CreateEven-
tHandler) 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
Tk Tk_HandleEvent(3tk)