XVisibilityEvent(3X11)        SDK X11 R4.11MU05       XVisibilityEvent(3X11)


NAME
       XVisibilityNotifyEvent - VisibilityNotify event structure

STRUCTURES
       The structure for VisibilityNotify events contains:

       typedef struct {
            int type;                /* VisibiltyNotify */
            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 state;
       } XVisibilityEvent;

       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
       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 whose visibility state
       changes.  The state member is set to the state of the window's
       visibility and can be VisibilityUnobscured,
       VisibilityPartiallyObscured, or VisibilityFullyObscured.  The X
       server ignores all of a window's subwindows when determining the
       visibility state of the window and processes VisibilityNotify events
       according to the following:

       ·    When the window changes state from partially obscured, fully
            obscured, or not viewable to viewable and completely unobscured,
            the X server generates the event with the state member of the
            XVisibilityEvent structure set to VisibilityUnobscured.

       ·    When the window changes state from viewable and completely
            unobscured or not viewable to viewable and partially obscured,
            the X server generates the event with the state member of the
            XVisibilityEvent structure set to VisibilityPartiallyObscured.

       ·    When the window changes state from viewable and completely
            unobscured, viewable and partially obscured, or not viewable to
            viewable and fully obscured, the X server generates the event
            with the state member of the XVisibilityEvent structure set to
            VisibilityFullyObscured.

SEE ALSO
       XAnyEvent(3X11), XButtonEvent(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),
       Xlib - C Language X Interface


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