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XVisibilityEvent(3) XLIB FUNCTIONS XVisibilityEvent(3)
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 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, Visibili-
tyPartiallyObscured, or VisibilityFullyObscured. The X server ignores all of a window's
subwindows when determining the visibility state of the window and processes VisibilityNo-
tify events according to the following:
o When the window changes state from partially obscured, fully obscured, or not view-
able 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 completely unobscured, viewable and
partially obscured, or not viewable to viewable and fully obscured, the X server gen-
erates the event with the state member of the XVisibilityEvent structure set to Visi-
bilityFullyObscured.
SEE ALSO
XAnyEvent(3), XButtonEvent(3), XCreateWindowEvent(3), XCirculateEvent(3), XCircu-
lateRequestEvent(3), XColormapEvent(3), XConfigureEvent(3), XConfigureRequestEvent(3),
XCrossingEvent(3), XDestroyWindowEvent(3), XErrorEvent(3), XExposeEvent(3), XFo-
cusChangeEvent(3), XGraphicsExposeEvent(3), XGravityEvent(3), XKeymapEvent(3),
XMapEvent(3), XMapRequestEvent(3), XPropertyEvent(3), XReparentEvent(3), XResiz-
eRequestEvent(3), XSelectionClearEvent(3), XSelectionEvent(3), XSelectionRequestEvent(3),
XUnmapEvent(3),
Xlib - C Language X Interface
X Version 11 libX11 1.6.7 XVisibilityEvent(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-04-20 02:07 @3.136.22.50 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)