XMaskEvent man page on Ultrix

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XNextEvent(3X11)		     X11R5		      XNextEvent(3X11)

NAME
       XNextEvent, XPeekEvent, XWindowEvent, XCheckWindowEvent, XMaskEvent,
       XCheckMaskEvent, XCheckTypedEvent, XCheckTypedWindowEvent - select
       events by type

SYNTAX
       XNextEvent(display, event_return)
	     Display *display;
	     XEvent *event_return;

       XPeekEvent(display, event_return)
	     Display *display;
	     XEvent *event_return;

       XWindowEvent(display, w, event_mask, event_return)
	     Display *display;
	     Window w;
	     long event_mask;
	     XEvent *event_return;

       Bool XCheckWindowEvent(display, w, event_mask, event_return)
	     Display *display;
	     Window w;
	     long event_mask;
	     XEvent *event_return;

       XMaskEvent(display, event_mask, event_return)
	     Display *display;
	     long event_mask;
	     XEvent *event_return;

       Bool XCheckMaskEvent(display, event_mask, event_return)
	     Display *display;
	     long event_mask;
	     XEvent *event_return;

       Bool XCheckTypedEvent(display, event_type, event_return)
	     Display *display;
	     int event_type;
	     XEvent *event_return;

       Bool XCheckTypedWindowEvent(display, w, event_type, event_return)
	     Display *display;
	     Window w;
	     int event_type;
	     XEvent *event_return;

ARGUMENTS
       display	 Specifies the connection to the X server.

       event_mask
		 Specifies the event mask.

       event_return
		 Returns the matched event's associated structure.

       event_return
		 Returns the next event in the queue.

       event_return
		 Returns a copy of the matched event's associated structure.

       event_type
		 Specifies the event type to be compared.

       w	 Specifies the window  whose event uou are interested in.

DESCRIPTION
       The function copies the first event from the event queue into the spec‐
       ified structure and then removes it from the queue.  If the event queue
       is empty, flushes the output buffer and blocks until an event is
       received.

       The function returns the first event from the event queue, but it does
       not remove the event from the queue.  If the queue is empty, flushes
       the output buffer and blocks until an event is received.	 It then
       copies the event into the client-supplied structure without removing it
       from the event queue.

       The function searches the event queue for an event that matches both
       the specified window and event mask.  When it finds a match, removes
       that event from the queue and copies it into the specified structure.
       The other events stored in the queue are not discarded.	If a matching
       event is not in the queue, flushes the output buffer and blocks until
       one is received.

       The function searches the event queue and then the events available on
       the server connection for the first event that matches the specified
       window and event mask.  If it finds a match, removes that event, copies
       it into the specified structure, and returns The other events stored in
       the queue are not discarded.  If the event you requested is not avail‐
       able, returns and the output buffer will have been flushed.

       The function searches the event queue for the events associated with
       the specified mask.  When it finds a match, removes that event and
       copies it into the specified structure.	The other events stored in the
       queue are not discarded.	 If the event you requested is not in the
       queue, flushes the output buffer and blocks until one is received.

       The function searches the event queue and then any events available on
       the server connection for the first event that matches the specified
       mask.  If it finds a match, removes that event, copies it into the
       specified structure, and returns The other events stored in the queue
       are not discarded.  If the event you requested is not available,
       returns and the output buffer will have been flushed.

       The function searches the event queue and then any events available on
       the server connection for the first event that matches the specified
       type.  If it finds a match, removes that event, copies it into the
       specified structure, and returns The other events in the queue are not
       discarded.  If the event is not available, returns and the output buf‐
       fer will have been flushed.

       The function searches the event queue and then any events available on
       the server connection for the first event that matches the specified
       type and window.	 If it finds a match, removes the event from the
       queue, copies it into the specified structure, and returns The other
       events in the queue are not discarded.  If the event is not available,
       returns and the output buffer will have been flushed.

SEE ALSO
       XAnyEvent(3X11), XIfEvent(3X11), XPutBackEvent(3X11), XSendEvent(3X11)
       Xlib - C Language X Interface

							      XNextEvent(3X11)
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