Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
XExposeEvent(3)			XLIB FUNCTIONS		       XExposeEvent(3)

NAME
       XExposeEvent - Expose event structure

STRUCTURES
       The structure for Expose	events contains:

       typedef struct {
	       int type;       /* Expose */
	       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;
	       int x, y;
	       int width, height;
	       int count;      /* if nonzero, at least this many more */
       } XExposeEvent;

       When you	receive	this event, the	structure members are set as follows.

       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 exposed (damaged) window.  The x	and  y
       members	are set	to the coordinates relative to the window's origin and
       indicate	the upper-left corner of the rectangle.	 The width and	height
       members	are set	to the size (extent) of	the rectangle.	The count mem-
       ber is set to the number	of Expose events that are to follow.  If count
       is  zero,  no  more  Expose events follow for this window.  However, if
       count is	nonzero, at least that number of Expose	events	(and  possibly
       more)  follow for this window.  Simple applications that	do not want to
       optimize	redisplay by distinguishing between subareas of	its window can
       just  ignore all	Expose events with nonzero counts and perform full re-
       displays	on events with zero counts.

SEE ALSO
       XAnyEvent(3),   XButtonEvent(3),	   XCreateWindowEvent(3),    XCircula-
       teEvent(3),   XCirculateRequestEvent(3),	  XColormapEvent(3),  XConfig-
       ureEvent(3), XConfigureRequestEvent(3), XCrossingEvent(3), XDestroyWin-
       dowEvent(3),    XErrorEvent(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		       XExposeEvent(3)

NAME | STRUCTURES | SEE ALSO

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=XExposeEvent&sektion=3&manpath=FreeBSD+12.2-RELEASE+and+Ports>

home | help