1XISETFOCUS(libmansuffix)
2========================
3
4NAME
5----
6
7   XISetFocus, XIGetFocus - set or get the device's focus.
8
9SYNOPSIS
10--------
11
12   #include <X11/extensions/XInput2.h>
13
14   Status XISetFocus( Display *display,
15                      int deviceid,
16                      Window focus,
17                      Time time);
18
19   Status XIGetFocus( Display *display,
20                      Window *focus_return);
21
22   display
23          Specifies the connection to the X server.
24
25   deviceid
26          Specifies the device whose focus is to be queried or
27          changed.
28
29   focus
30          The new focus window.
31
32   focus_return
33          Returns the current focus window.
34
35   time
36          A valid timestamp or CurrentTime.
37
38DESCRIPTION
39-----------
40
41   XISetFocus changes the focus of the specified device and its
42   last-focus-change time. It has no effect if the specified time
43   is earlier than the current last-focus-change time or is later
44   than the current X server time. Otherwise, the
45   last-focus-change time is set to the specified time.
46   CurrentTime is replaced by the current X server time).
47   XISetFocus causes the X server to generate core, XI and XI2
48   focus events.
49
50   If the focus window is None all keyboard events by this device
51   are discarded until a new focus window is set. Otherwise, if
52   focus is a window, it becomes the device's focus window. If a
53   generated device event would normally be reported to this
54   window or one of its inferiors, the event is reported as usual.
55   Otherwise, the event is reported relative to the focus window.
56
57   The specified focus window must be viewable at the time
58   XISetFocus is called, or a BadMatch error results. If the focus
59   window later becomes not viewable, the focus reverts to the
60   parent (or the closest viewable ancestor. When the focus
61   reverts, the X server generates core, XI and XI2 focus events
62   but the last-focus-change time is not affected.
63
64   Attempting to set the focus on a master pointer device or an
65   attached slave device will result in a BadDevice error.
66
67   XISetFocus can generate BadDevice, BadMatch, BadValue, and
68   BadWindow errors.
69
70DIAGNOSTICS
71-----------
72
73   BadValue
74          A value is outside of the permitted range.
75
76   BadDevice
77          An invalid device was specified. The device does not
78          exist or is not a appropriate for the type of change.
79
80   BadMatch
81          The window is not viewable.
82
83   BadWindow
84          A value for a Window argument does not name a defined
85          Window.
86
87