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CentOS 7.0 - man page for xanyevent (centos section 3)

XAnyEvent(3)				  XLIB FUNCTIONS			     XAnyEvent(3)

       XAnyEvent, XEvent - generic X event structures

       All the event structures declared in <X11/Xlib.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 identifies it.  For
       example, when the X server reports a GraphicsExpose event to a client application, it
       sends an XGraphicsExposeEvent structure 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 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 XEvent 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 XEvent 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 gener-
       ated the event.	The third member always is send_event, which is a Bool that indicates if
       the event was sent by a different 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 addi-
       tion, a pointer to the generic event must be cast before it is used to access any other
       information in the structure.

       XButtonEvent(3), XCreateWindowEvent(3), XCirculateEvent(3), XCirculateRequestEvent(3),
       XColormapEvent(3), XConfigureEvent(3), XConfigureRequestEvent(3), XCrossingEvent(3), XDe-
       stroyWindowEvent(3), XErrorEvent(3), XExposeEvent(3), XFocusChangeEvent(3), XGraphicsEx-
       poseEvent(3), XGravityEvent(3), XKeymapEvent(3), XMapEvent(3), XMapRequestEvent(3), XProp-
       ertyEvent(3), XReparentEvent(3), XResizeRequestEvent(3), XSelectionClearEvent(3), XSelec-
       tionEvent(3), XSelectionRequestEvent(3), XUnmapEvent(3), XVisibilityEvent(3)
       Xlib - C Language X Interface

X Version 11				   libX11 1.6.0 			     XAnyEvent(3)

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