XVisibilityEvent

XVisibilityEvent(3X11)		XLIB FUNCTIONS	       XVisibilityEvent(3X11)



NAME
       XVisibilityEvent - VisibilityNotify event structure

STRUCTURES
       The structure for VisibilityNotify events contains:

       typedef struct {
	    int type;		     /∗ VisibilityNotify */
	    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 GraphicsEx-
       pose 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-signifi-
       cant 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 Visibili-
       tyFullyObscured.	 The X server ignores all of a window’s subwindows
       when determining the visibility state of the window and processes Vis-
       ibilityNotify 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 unob-
	    scured or not viewable to viewable and partially obscured, the X
	    server generates the event with the state member of the XVisibil-
	    ityEvent structure set to VisibilityPartiallyObscured.

       ·    When the window changes state from viewable and completely unob-
	    scured, viewable and partially obscured, or not viewable to view-
	    able and fully obscured, the X server generates the event with
	    the state member of the XVisibilityEvent structure set to Visi-
	    bilityFullyObscured.

SEE ALSO
       XAnyEvent(3X11), XButtonEvent(3X11), XCreateWindowEvent(3X11), XCircu-
       lateEvent(3X11), XCirculateRequestEvent(3X11), XColormapEvent(3X11),
       XConfigureEvent(3X11), XConfigureRequestEvent(3X11),
       XCrossingEvent(3X11), XDestroyWindowEvent(3X11), XErrorEvent(3X11),
       XExposeEvent(3X11), XFocusChangeEvent(3X11), XGraphicsEx-
       poseEvent(3X11), XGravityEvent(3X11), XKeymapEvent(3X11),
       XMapEvent(3X11), XMapRequestEvent(3X11), XPropertyEvent(3X11), XRepar-
       entEvent(3X11), XResizeRequestEvent(3X11), XSelectionClearEvent(3X11),
       XSelectionEvent(3X11), XSelectionRequestEvent(3X11), XUn-
       mapEvent(3X11),
       Xlib - C Language X Interface



						       XVisibilityEvent(3X11)