xputbackevent(3) [x11r4 man page]

XPutBackEvent(3)						  XLIB FUNCTIONS						  XPutBackEvent(3)

NAME

       XPutBackEvent - put events back on the queue

SYNTAX

       XPutBackEvent(Display *display, XEvent *event);

ARGUMENTS

       display	 Specifies the connection to the X server.

       event	 Specifies the event.

DESCRIPTION

       The XPutBackEvent function pushes an event back onto the head of the display's event queue by copying the event into the queue.	This can
       be useful if you read an event and then decide that you would rather deal with it later.  There is no limit to the number of times in suc-
       cession that you can call XPutBackEvent.

SEE ALSO

       XAnyEvent(3X11), XIfEvent(3X11), XNextEvent(3X11), XSendEvent(3X11)
       Xlib - C Language X Interface

X Version 11							   libX11 1.2.1 						  XPutBackEvent(3)

XIfEvent(3X11)															    XIfEvent(3X11)

NAME

       XIfEvent, XCheckIfEvent, XPeekIfEvent - check the event queue with a predicate procedure

SYNOPSIS

       XIfEvent(display, event_return, predicate, arg)
	       Display *display;
	       XEvent *event_return;
	       Bool (*predicate)();
	       XPointer arg;

       Bool XCheckIfEvent(display, event_return, predicate, arg)
	       Display *display;
	       XEvent *event_return;
	       Bool (*predicate)();
	       XPointer arg;

       XPeekIfEvent(display, event_return, predicate, arg)
	       Display *display;
	       XEvent *event_return;
	       Bool (*predicate)();
	       XPointer arg;

ARGUMENTS

       Specifies  the  user-supplied  argument that will be passed to the predicate procedure.	Specifies the connection to the X server.  Returns
       either a copy of or the matched event's associated structure.  Specifies the procedure that is to be called to determine if the next  event
       in the queue matches what you want.

DESCRIPTION

       The  XIfEvent  function	completes  only  when the specified predicate procedure returns True for an event, which indicates an event in the
       queue matches.  XIfEvent flushes the output buffer if it blocks waiting for additional events.  XIfEvent removes the  matching  event  from
       the queue and copies the structure into the client-supplied XEvent structure.

       When  the  predicate  procedure finds a match, XCheckIfEvent copies the matched event into the client-supplied XEvent structure and returns
       True. (This event is removed from the queue.) If the predicate procedure finds no match, XCheckIfEvent returns False, and the output buffer
       will have been flushed. All earlier events stored in the queue are not discarded.

       The  XPeekIfEvent  function  returns  only  when the specified predicate procedure returns True for an event. After the predicate procedure
       finds a match, XPeekIfEvent copies the matched event into the client-supplied XEvent structure without removing the event from  the  queue.
       XPeekIfEvent flushes the output buffer if it blocks waiting for additional events.

SEE ALSO

       XAnyEvent(3X11), XNextEvent(3X11), XPutBackEvent(3X11), XSendEvent(3X11)

       Xlib -- C Language X Interface

																    XIfEvent(3X11)