1XVisibilityEvent(3)             XLIB FUNCTIONS             XVisibilityEvent(3)
2
3
4

NAME

6       XVisibilityEvent - VisibilityNotify event structure
7

STRUCTURES

9       The structure for VisibilityNotify events contains:
10
11       typedef struct {
12               int type;       /* VisibilityNotify */
13               unsigned long serial;   /* # of last request processed by server */
14               Bool send_event;        /* true if this came from a SendEvent request */
15               Display *display;       /* Display the event was read from */
16               Window window;
17               int state;
18       } XVisibilityEvent;
19
20       When you receive this event, the structure members are set as follows.
21
22       The  type  member  is set to the event type constant name that uniquely
23       identifies it.  For example, when the X server reports a GraphicsExpose
24       event  to a client application, it sends an XGraphicsExposeEvent struc‐
25       ture with the type member set to GraphicsExpose.  The display member is
26       set  to a pointer to the display the event was read on.  The send_event
27       member is set to True if the event came from a SendEvent  protocol  re‐
28       quest.  The serial member is set from the serial number reported in the
29       protocol but expanded from the 16-bit least-significant bits to a  full
30       32-bit value.  The window member is set to the window that is most use‐
31       ful to toolkit dispatchers.
32
33       The window member is set to the window whose visibility state  changes.
34       The state member is set to the state of the window's visibility and can
35       be VisibilityUnobscured, VisibilityPartiallyObscured, or VisibilityFul‐
36       lyObscured.  The X server ignores all of a window's subwindows when de‐
37       termining the visibility state of the window  and  processes  Visibili‐
38       tyNotify events according to the following:
39
40       •    When  the  window changes state from partially obscured, fully ob‐
41            scured, or not viewable to viewable and completely unobscured, the
42            X  server  generates the event with the state member of the XVisi‐
43            bilityEvent structure set to VisibilityUnobscured.
44
45       •    When the window changes state from viewable and  completely  unob‐
46            scured  or  not viewable to viewable and partially obscured, the X
47            server generates the event with the state member of the XVisibili‐
48            tyEvent structure set to VisibilityPartiallyObscured.
49
50       •    When  the  window changes state from viewable and completely unob‐
51            scured, viewable and partially obscured, or not viewable to  view‐
52            able and fully obscured, the X server generates the event with the
53            state member of the XVisibilityEvent structure set to  Visibility‐
54            FullyObscured.
55

SEE ALSO

57       XAnyEvent(3),    XButtonEvent(3),    XCreateWindowEvent(3),   XCircula‐
58       teEvent(3),  XCirculateRequestEvent(3),   XColormapEvent(3),   XConfig‐
59       ureEvent(3), XConfigureRequestEvent(3), XCrossingEvent(3), XDestroyWin‐
60       dowEvent(3),  XErrorEvent(3),  XExposeEvent(3),   XFocusChangeEvent(3),
61       XGraphicsExposeEvent(3),       XGravityEvent(3),       XKeymapEvent(3),
62       XMapEvent(3),    XMapRequestEvent(3),    XPropertyEvent(3),     XRepar‐
63       entEvent(3),  XResizeRequestEvent(3),  XSelectionClearEvent(3), XSelec‐
64       tionEvent(3), XSelectionRequestEvent(3), XUnmapEvent(3),
65       Xlib - C Language X Interface
66
67
68
69X Version 11                     libX11 1.7.0              XVisibilityEvent(3)
Impressum