1XkbNoteDeviceChanges(3) XKB FUNCTIONS XkbNoteDeviceChanges(3)
2
6 XkbNoteDeviceChanges - Note device changes reported in an XkbExtension‐
7 DeviceNotify event
8
10 void XkbNoteDeviceChanges (XkbDeviceChangesPtr old, XkbExtensionDevi‐
11 ceNotifyEvent *new, unsigned int wanted);
12
14 - old structure tracking state changes
15 - new event indicating state changes
17 - wanted
19 mask indicating changes to note
20
22 The wanted field specifies the changes that should be noted in old, and
23 is composed of the bitwise inclusive OR of one or more of the masks
24 from Table 1. The reason field of the event in new indicates the types
25 of changes the event is reporting. XkbNoteDeviceChanges updates the
26 XkbDeviceChangesRec specified by old with the changes that are both
27 specified in wanted and contained in new->reason.
28 Table 1 XkbDeviceInfoRec Mask Bits
30 ____________________________________________________________________________________
31 Name XkbDeviceInfoRec Value Capability If Set
32 Fields Effected
33 ____________________________________________________________________________________
34 XkbXI_KeyboardsMask (1L <<0) Clients can use all
35 Xkb requests and events
36 with KeyClass devices
37 supported by the input
38 device extension.
39 XkbXI_ButtonActionsMask num_btns (1L <<1) Clients can assign key
41 btn_acts actions to buttons
42 non-KeyClass input
43 extension devices.
44 XkbXI_IndicatorNamesMask leds->names (1L <<2) Clients can assign
46 names to indicators on
47 non-KeyClass input
48 extension devices.
49 XkbXI_IndicatorMapsMask leds->maps (1L <<3) Clients can assign
51 indicator maps to
52 indicators on
53 non-KeyClass input
54 extension devices.
55 XkbXI_IndicatorStateMask leds->state (1L <<4) Clients can request
57 the status of indicators
58 on non-KeyClass input
59 extension devices.
60 XkbXI_IndicatorsMask sz_leds (0x1c) XkbXI_IndicatorNamesMask |
62 num_leds XkbXI_IndicatorMapsMask |
63 leds->* XkbXI_IndicatorStateMask
64 XkbXI_UnsupportedFeaturesMask unsupported (1L <<15)
66 XkbXI_AllDeviceFeaturesMask Those selected (0x1e) XkbXI_IndicatorsMask |
68 by Value Column XkbSI_ButtonActionsMask
69 masks
70 XkbXI_AllFeaturesMask Those selected (0x1f) XkbSI_AllDeviceFeaturesMask |
72 by Value Column XkbSI_KeyboardsMask
73 masks
74 XkbXI_AllDetailsMask Those selected (0x801f) XkbXI_AllFeaturesMask |
76 by Value column XkbXI_UnsupportedFeaturesMask
77 masks
78 To update a local copy of the state and configuration of an X input ex‐
80 tension device with the changes previously noted in an XkbDe‐
81 viceChangesRec structure, use XkbGetDeviceInfoChanges.
82
84 Changes to an Xkb extension device may be tracked by listening to Xkb‐
85 DeviceExtensionNotify events and accumulating the changes in an XkbDe‐
86 viceChangesRec structure. The changes noted in the structure may then
87 be used in subsequent operations to update either a server configura‐
88 tion or a local copy of an Xkb extension device configuration. The
89 changes structure is defined as follows:
90 typedef struct _XkbDeviceChanges {
92 unsigned int changed; /* bits indicating what has changed */
93 unsigned short first_btn; /* number of first button which changed, if any */
94 unsigned short num_btns; /* number of buttons that have changed */
95 XkbDeviceLedChangesRec leds;
96 } XkbDeviceChangesRec,*XkbDeviceChangesPtr;
97
100 XkbGetDeviceInfoChanges(3)
101X Version 11 libX11 1.7.3.1 XkbNoteDeviceChanges(3)