XVisibilityEvent(3X11)      X Version 11(Release 5)      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.




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XVisibilityEvent(3X11)      X Version 11(Release 5)      XVisibilityEvent(3X11)


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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