Table of Contents
XVisibilityNotifyEvent
- VisibilityNotify event structure
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.
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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