


XExposeEvent(3X11)					   XExposeEvent(3X11)
X11R5									X11R5



NAME
  XExposeEvent - Expose	event structure

STRUCTURES
  The structure	for _E_x_p_o_s_e 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 iden-
  tifies it.  For example, when	the X server reports a _G_r_a_p_h_i_c_s_E_x_p_o_s_e event
  to a client application, it sends an _X_G_r_a_p_h_i_c_s_E_x_p_o_s_e_E_v_e_n_t structure with
  the type member set to _G_r_a_p_h_i_c_s_E_x_p_o_s_e.  The display member is	set to a
  pointer to the display the event was read on.	 The send_event	member is set
  to _T_r_u_e if the event came from a _S_e_n_d_E_v_e_n_t protocol request.	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 useful 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 member is
  set to the number of _E_x_p_o_s_e events that are to follow.  If count is zero,
  no more _E_x_p_o_s_e events	follow for this	window.	 However, if count is
  nonzero, at least that number	of _E_x_p_o_s_e 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 _E_x_p_o_s_e events with nonzero counts	and perform full redisplays on events
  with zero counts.

SEE ALSO
  XAnyEvent(3X11), XButtonEvent(3X11), XCreateWindowEvent(3X11),
  XCirculateEvent(3X11), XCirculateRequestEvent(3X11), XColormapEvent(3X11),
  XConfigureEvent(3X11), XConfigureRequestEvent(3X11), XCrossingEvent(3X11),
  XDestroyWindowEvent(3X11), XErrorEvent(3X11),	XFocusChangeEvent(3X11),
  XGraphicsExposeEvent(3X11), XGravityEvent(3X11), XKeymapEvent(3X11),
  XMapEvent(3X11), XMapRequestEvent(3X11), XPropertyEvent(3X11),
  XReparentEvent(3X11),	XResizeRequestEvent(3X11),
  XSelectionClearEvent(3X11), XSelectionEvent(3X11),
  XSelectionRequestEvent(3X11),	XUnmapEvent(3X11), XVisibilityEvent(3X11)
  _X_l_i_b - _C _L_a_n_g_u_a_g_e _X _I_n_t_e_r_f_a_c_e






