


XButtonEvent(3X11)					   XButtonEvent(3X11)
X11R5									X11R5



NAME
  XButtonEvent,	XKeyEvent, XMotionEvent	- KeyPress, KeyRelease,	ButtonPress,
  ButtonRelease, and MotionNotify event	structures

STRUCTURES
  The structures for _K_e_y_P_r_e_s_s, _K_e_y_R_e_l_e_a_s_e, _B_u_t_t_o_n_P_r_e_s_s,	_B_u_t_t_o_n_R_e_l_e_a_s_e, and
  _M_o_t_i_o_n_N_o_t_i_f_y events contain:

  typedef struct {
	  int type;	  /* ButtonPress or ButtonRelease */
	  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 it is 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 */
	  unsigned int state;	  /* key or button mask	*/
	  unsigned int button;	  /* detail */
	  Bool same_screen;	  /* same screen flag */
  } XButtonEvent;
  typedef XButtonEvent XButtonPressedEvent;
  typedef XButtonEvent XButtonReleasedEvent;

  typedef struct {
	  int type;	  /* KeyPress or KeyRelease */
	  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 it is 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 */
	  unsigned int state;	  /* key or button mask	*/
	  unsigned int keycode;	  /* detail */
	  Bool same_screen;	  /* same screen flag */
  } XKeyEvent;
  typedef XKeyEvent XKeyPressedEvent;
  typedef XKeyEvent XKeyReleasedEvent;

  typedef struct {
	  int type;	  /* MotionNotify */
	  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 */
	  unsigned int state;	  /* key or button mask	*/
	  char is_hint;	  /* detail */
	  Bool same_screen;	  /* same screen flag */
  } XMotionEvent;
  typedef XMotionEvent XPointerMovedEvent;

  When you receive these events, their 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.

  These	structures have	the following common members: window, root, subwin-
  dow, time, x,	y, x_root, y_root, state, and same_screen.  The	window member
  is set to the	window on which	the event was generated	and is referred	to as
  the event window. As long as the conditions previously discussed are met,
  this is the window used by the X server to report the	event.	The root
  member is set	to the source window's root window.  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 _T_r_u_e or _F_a_l_s_e.  If
  _T_r_u_e,	the event and root windows are on the same screen.  If _F_a_l_s_e, the
  event	and root windows are not on the	same screen.

  If the source	window is an inferior of the event window, the subwindow
  member of the	structure is set to the	child of the event window that is the
  source window	or the child of	the event window that is an ancestor of	the
  source window.  Otherwise, the X server sets the subwindow member to _N_o_n_e.
  The time member is set to the	time when the event was	generated and is
  expressed in milliseconds.

  If the event window is on the	same screen as the root	window,	the x and y
  members are set to the coordinates relative to the event window's origin.
  Otherwise, these members are set to zero.

  The state member is set to indicate the logical state	of the pointer but-
  tons and modifier keys just prior to the event, which	is the bitwise
  inclusive OR of one or more of the button or modifier	key masks:
  _B_u_t_t_o_n_1_M_a_s_k, _B_u_t_t_o_n_2_M_a_s_k, _B_u_t_t_o_n_3_M_a_s_k, _B_u_t_t_o_n_4_M_a_s_k, _B_u_t_t_o_n_5_M_a_s_k, _S_h_i_f_t_M_a_s_k,
  _L_o_c_k_M_a_s_k, _C_o_n_t_r_o_l_M_a_s_k, _M_o_d_1_M_a_s_k, _M_o_d_2_M_a_s_k, _M_o_d_3_M_a_s_k, _M_o_d_4_M_a_s_k, and
  _M_o_d_5_M_a_s_k.

  Each of these	structures also	has a member that indicates the	detail.	 For
  the _X_K_e_y_P_r_e_s_s_e_d_E_v_e_n_t and _X_K_e_y_R_e_l_e_a_s_e_d_E_v_e_n_t structures, this member is
  called keycode.  It is set to	a number that represents a physical key	on
  the keyboard.	 The keycode is	an arbitrary representation for	any key	on
  the keyboard (see sections 12.7 and 16.1).

  For the _X_B_u_t_t_o_n_P_r_e_s_s_e_d_E_v_e_n_t and _X_B_u_t_t_o_n_R_e_l_e_a_s_e_d_E_v_e_n_t structures, this
  member is called button.  It represents the pointer button that changed
  state	and can	be the _B_u_t_t_o_n_1,	_B_u_t_t_o_n_2, _B_u_t_t_o_n_3, _B_u_t_t_o_n_4, or _B_u_t_t_o_n_5 value.
  For the _X_P_o_i_n_t_e_r_M_o_v_e_d_E_v_e_n_t structure,	this member is called is_hint.	It
  can be set to	_N_o_t_i_f_y_N_o_r_m_a_l or	_N_o_t_i_f_y_H_i_n_t.


SEE ALSO
  XAnyEvent(3X11), XCreateWindowEvent(3X11), XCirculateEvent(3X11),
  XCirculateRequestEvent(3X11),	XColormapEvent(3X11), XConfigureEvent(3X11),
  XConfigureRequestEvent(3X11),	XCrossingEvent(3X11),
  XDestroyWindowEvent(3X11), XErrorEvent(3X11),	XExposeEvent(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	delim off





























































