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       XFocusChangeEvent - FocusIn and FocusOut event structure


       The structure for FocusIn and FocusOut events contains:

       typedef struct {
            int type;                /* FocusIn or FocusOut */
            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;           /* window of event */
            int mode;                /* NotifyNormal, NotifyGrab, NotifyUngrab */
            int detail;
                                     * NotifyAncestor, NotifyVirtual, NotifyInferior,
                                     * NotifyNonlinear,NotifyNonlinearVirtual, NotifyPointer,
                                     * NotifyPointerRoot, NotifyDetailNone
       } XFocusChangeEvent;
       typedef XFocusChangeEvent XFocusInEvent;
       typedef XFocusChangeEvent XFocusOutEvent;

       When you receive these events, 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 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 window member is set to the window on which the FocusIn or FocusOut event was
       generated.  This is the window used by the X server to report the event.  The mode member
       is set to indicate whether the focus events are normal focus events, focus events while
       grabbed, focus events when a grab activates, or focus events when a grab deactivates.  The
       X server can set the mode member to NotifyNormal, NotifyWhileGrabbed, NotifyGrab, or

       All FocusOut events caused by a window unmap are generated after any UnmapNotify event;
       however, the X protocol does not constrain the ordering of FocusOut events with respect to
       generated EnterNotify, LeaveNotify, VisibilityNotify, and Expose events.

       Depending on the event mode, the detail member is set to indicate the notify detail and
       can be NotifyAncestor, NotifyVirtual, NotifyInferior, NotifyNonlinear,
       NotifyNonlinearVirtual, NotifyPointer, NotifyPointerRoot, or NotifyDetailNone.


       XAnyEvent(3), XButtonEvent(3), XCreateWindowEvent(3), XCirculateEvent(3),
       XCirculateRequestEvent(3), XColormapEvent(3), XConfigureEvent(3),
       XConfigureRequestEvent(3), XCrossingEvent(3), XDestroyWindowEvent(3), XErrorEvent(3),
       XExposeEvent(3), XGraphicsExposeEvent(3), XGravityEvent(3), XKeymapEvent(3), XMapEvent(3),
       XMapRequestEvent(3), XPropertyEvent(3), XReparentEvent(3), XResizeRequestEvent(3),
       XSelectionClearEvent(3), XSelectionEvent(3), XSelectionRequestEvent(3), XUnmapEvent(3),
       Xlib - C Language X Interface