XAnyEvent(3X11)                                               XAnyEvent(3X11)
X11R6                                                                   X11R6



NAME

  XXAAnnyyEEvveenntt, XXEEvveenntt - generic X event structures

DESCRIPTION

  All the event structures declared in <_X_1_1_/_X_l_i_b_._h> have the following common
  members:

       typedef struct {
               int type;
               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;
       } XAnyEvent;

  The type member is set to the event type constant name that uniquely iden-
  tifies it.  For example, when the X server reports a GGrraapphhiiccssEExxppoossee event
  to a client application, it sends an XXGGrraapphhiiccssEExxppoosseeEEvveenntt structure with
  the type member set to GGrraapphhiiccssEExxppoossee .  The display member is set to a
  pointer to the display the event was read on.  The send_event member is set
  to TTrruuee if the event came from a SSeennddEEvveenntt 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 XXEEvveenntt structure is a union of the individual structures declared for
  each event type:

       typedef union _XEvent {
            int type;                /* must not be changed */
            XAnyEvent xany;
            XKeyEvent xkey;
            XButtonEvent xbutton;
            XMotionEvent xmotion;
            XCrossingEvent xcrossing;
            XFocusChangeEvent xfocus;
            XExposeEvent xexpose;
            XGraphicsExposeEvent xgraphicsexpose;
            XNoExposeEvent xnoexpose;
            XVisibilityEvent xvisibility;
            XCreateWindowEvent xcreatewindow;
            XDestroyWindowEvent xdestroywindow;
            XUnmapEvent xunmap;
            XMapEvent xmap;
            XMapRequestEvent xmaprequest;
            XReparentEvent xreparent;
            XConfigureEvent xconfigure;
            XGravityEvent xgravity;
            XResizeRequestEvent xresizerequest;
            XConfigureRequestEvent xconfigurerequest;
            XCirculateEvent xcirculate;
            XCirculateRequestEvent xcirculaterequest;
            XPropertyEvent xproperty;
            XSelectionClearEvent xselectionclear;
            XSelectionRequestEvent xselectionrequest;
            XSelectionEvent xselection;
            XColormapEvent xcolormap;
            XClientMessageEvent xclient;
            XMappingEvent xmapping;
            XErrorEvent xerror;
            XKeymapEvent xkeymap;
            long pad[24];
       } XEvent;

  An XXEEvveenntt structure's first entry always is the type member, which is set
  to the event type.  The second member always is the serial number of the
  protocol request that generated the event.  The third member always is
  send_event, which is a BBooooll that indicates if the event was sent by a dif-
  ferent client.  The fourth member always is a display, which is the display
  that the event was read from.  Except for keymap events, the fifth member
  always is a window, which has been carefully selected to be useful to
  toolkit dispatchers.  To avoid breaking toolkits, the order of these first
  five entries is not to change.  Most events also contain a time member,
  which is the time at which an event occurred.  In addition, a pointer to
  the generic event must be cast before it is used to access any other infor-
  mation in the structure.

SEE ALSO

  XXBBuuttttoonnEEvveenntt(3X11), XXCCrreeaatteeWWiinnddoowwEEvveenntt(3X11), XXCCiirrccuullaatteeEEvveenntt(3X11), XXCCiirr--
  ccuullaatteeRReeqquueessttEEvveenntt(3X11), XXCCoolloorrmmaappEEvveenntt(3X11), XXCCoonnffiigguurreeEEvveenntt(3X11),
  XXCCoonnffiigguurreeRReeqquueessttEEvveenntt(3X11), XXCCrroossssiinnggEEvveenntt(3X11), XXDDeessttrrooyyWWiinnddooww--
  EEvveenntt(3X11), XXEErrrroorrEEvveenntt(3X11), XXEExxppoosseeEEvveenntt(3X11), XXFFoo--
  ccuussCChhaannggeeEEvveenntt(3X11), XXGGrraapphhiiccssEExxppoosseeEEvveenntt(3X11), XXGGrraavviittyyEEvveenntt(3X11),
  XXKKeeyymmaappEEvveenntt(3X11), XXMMaappEEvveenntt(3X11), XXMMaappRReeqquueessttEEvveenntt(3X11), XXPPrrooppeerr--
  ttyyEEvveenntt(3X11), XXRReeppaarreennttEEvveenntt(3X11), XXRReessiizzeeRReeqquueessttEEvveenntt(3X11), XXSSeelleeccttiioonn--
  CClleeaarrEEvveenntt(3X11), XXSSeelleeccttiioonnEEvveenntt(3X11), XXSSeelleeccttiioonnRReeqquueessttEEvveenntt(3X11), XXUUnn--
  mmaappEEvveenntt(3X11), XXVViissiibbiilliittyyEEvveenntt(3X11)
  _X_l_i_b _- _C _L_a_n_g_u_a_g_e _X _I_n_t_e_r_f_a_c_e