XVisibilityEvent(3X11) X11R5 XVisibilityEvent(3X11)NAME
XVisibilityEvent, XVisibilityNotifyEvent - VisibilityNotify event
structure
STRUCTURES
The structure for 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 event to a
client application, it sends an structure with the type member set to
The display member is set to a pointer to the display the event was
read on. The send_event member is set to if the event came from a pro‐
tocol 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 or The X server ignores all of a window's subwindows when determin‐
ing the visibility state of the window and processes 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
structure set to
· 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 structure
set to
· 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 structure set to
SEE ALSOXAnyEvent(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), XUnmapEvent(3X11),
Xlib - C Language X Interface
XVisibilityEvent(3X11)
