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XCrossingEvent(3)		XLIB FUNCTIONS		     XCrossingEvent(3)

NAME
       XCrossingEvent -	EnterNotify and	LeaveNotify event structure

STRUCTURES
       The structure for EnterNotify and LeaveNotify events contains:

       typedef struct {
	       int type;       /* EnterNotify or LeaveNotify */
	       unsigned	long serial;   /* # of last request processed by server	*/
	       Bool send_event;	       /* true if this came from a SendEvent request */
	       Display *display;       /* Display the event was	read from */
	       Window window;  /* "event" window reported relative to */
	       Window root;    /* root window that the event occurred on */
	       Window subwindow;       /* child	window */
	       Time time;      /* milliseconds */
	       int x, y;       /* pointer x, y coordinates in event window */
	       int x_root, y_root;     /* coordinates relative to root */
	       int mode;       /* NotifyNormal,	NotifyGrab, NotifyUngrab */
	       int detail;
		       /*
		       * NotifyAncestor, NotifyVirtual,	NotifyInferior,
		       * NotifyNonlinear,NotifyNonlinearVirtual
		       */
	       Bool same_screen;       /* same screen flag */
	       Bool focus;     /* boolean focus	*/
	       unsigned	int state;     /* key or button	mask */
       } XCrossingEvent;
       typedef XCrossingEvent XEnterWindowEvent;
       typedef XCrossingEvent XLeaveWindowEvent;

       When  you  receive  these events, the structure members are set as fol-
       lows.

       The type	member is set to the event type	constant  name	that  uniquely
       identifies it.  For example, when the X server reports a	GraphicsExpose
       event to	a client application, it sends an XGraphicsExposeEvent	struc-
       ture with the type member set to	GraphicsExpose.	 The display member is
       set to a	pointer	to the display the event was read on.  The  send_event
       member  is  set to True if the event came from a	SendEvent protocol re-
       quest.  The serial member is set	from the serial	number reported	in the
       protocol	 but expanded from the 16-bit least-significant	bits to	a full
       32-bit value.  The window member	is set to the window that is most use-
       ful to toolkit dispatchers.

       The  window  member  is	set  to	the window on which the	EnterNotify or
       LeaveNotify event was generated and is referred to as the event window.
       This  is	 the  window  used by the X server to report the event,	and is
       relative	to the root window on which the	event occurred.	 The root mem-
       ber  is	set  to	 the  root window of the screen	on which the event oc-
       curred.

       For a LeaveNotify event,	if a child of the event	 window	 contains  the
       initial position	of the pointer,	the subwindow component	is set to that
       child.  Otherwise, the X	server sets the	subwindow member to None.  For
       an EnterNotify event, if	a child	of the event window contains the final
       pointer position, the subwindow component is set	to that	child or None.

       The time	member is set to the time when the event was generated and  is
       expressed  in milliseconds.  The	x and y	members	are set	to the coordi-
       nates of	the pointer position in	the event window.   This  position  is
       always  the pointer's final position, not its initial position.	If the
       event window is on the same screen as the root window, x	and y are  the
       pointer	coordinates relative to	the event window's origin.  Otherwise,
       x and y are set to zero.	 The x_root and	y_root members are set to  the
       pointer's  coordinates relative to the root window's origin at the time
       of the event.

       The same_screen member is set to	indicate whether the event  window  is
       on  the same screen as the root window and can be either	True or	False.
       If True,	the event and root windows are on the same screen.  If	False,
       the event and root windows are not on the same screen.

       The focus member	is set to indicate whether the event window is the fo-
       cus window or an	inferior of the	focus window.  The X  server  can  set
       this  member to either True or False.  If True, the event window	is the
       focus window or an inferior of the focus	window.	 If False,  the	 event
       window is not the focus window or an inferior of	the focus window.

       The  state  member  is set to indicate the state	of the pointer buttons
       and modifier keys just prior to the event.  The X server	can  set  this
       member to the bitwise inclusive OR of one or more of the	button or mod-
       ifier key masks:	Button1Mask,  Button2Mask,  Button3Mask,  Button4Mask,
       Button5Mask,  ShiftMask,	 LockMask,  ControlMask,  Mod1Mask,  Mod2Mask,
       Mod3Mask, Mod4Mask, Mod5Mask.

       The mode	member is set  to  indicate  whether  the  events  are	normal
       events,	pseudo-motion  events  when a grab activates, or pseudo-motion
       events when a grab deactivates.	The X server can set  this  member  to
       NotifyNormal, NotifyGrab, or NotifyUngrab.

       The detail member is set	to indicate the	notify detail and can be Noti-
       fyAncestor, NotifyVirtual, NotifyInferior,  NotifyNonlinear,  or	 Noti-
       fyNonlinearVirtual.

SEE ALSO
       XAnyEvent(3),	XButtonEvent(3),    XCreateWindowEvent(3),   XCircula-
       teEvent(3),  XCirculateRequestEvent(3),	 XColormapEvent(3),   XConfig-
       ureEvent(3),  XConfigureRequestEvent(3),	 XDestroyWindowEvent(3),  XEr-
       rorEvent(3),   XExposeEvent(3),	 XFocusChangeEvent(3),	  XGraphicsEx-
       poseEvent(3),  XGravityEvent(3),	XKeymapEvent(3), XMapEvent(3), XMapRe-
       questEvent(3),	 XPropertyEvent(3),	XReparentEvent(3),     XResiz-
       eRequestEvent(3),  XSelectionClearEvent(3), XSelectionEvent(3), XSelec-
       tionRequestEvent(3), XUnmapEvent(3), XVisibilityEvent(3)
       Xlib - C	Language X Interface

X Version 11			 libX11	1.6.12		     XCrossingEvent(3)

NAME | STRUCTURES | SEE ALSO

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