XVisibilityEvent(3X1X)Version 11 (Release 6XVisibilityEvent(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:
o 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.
o 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.
o When the window changes state from viewable and
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XVisibilityEvent(3X1X)Version 11 (Release 6XVisibilityEvent(3X11)
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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