XkbChangeControls(3) XKB FUNCTIONS XkbChangeControls(3)
NAME
XkbChangeControls - Provides a flexible method for updating the controls
in a server to match those in the changed keyboard description
SYNOPSIS
Bool XkbChangeControls (Display *dpy, XkbDescPtr xkb, XkbControlsChange-
sPtr changes);
ARGUMENTS
dpy connection to X server
xkb keyboard description with changed xkb->ctrls
changes
which parts of xkb->ctrls have changed
DESCRIPTION
The XkbControlsChangesRec structure allows applications to track modifi-
cations to an XkbControlsRec structure and thereby reduce the amount of
traffic sent to the server. The same XkbControlsChangesRec structure may
be used in several successive modifications to the same XkbControlsRec
structure, then subsequently used to cause all of the changes, and only
the changes, to be propagated to the server.
The changed_ctrls field is a mask specifying which logical sets of data
in the controls structure have been modified. In this context, modified
means set, that is, if a value is set to the same value it previously
contained, it has still been modified, and is noted as changed. Valid
values for changed_ctrls are any combination of the masks listed in Ta-
ble 1 that have "ok" in the changed_ctrls column. Setting a bit implies
the corresponding data fields from the "Relevant XkbControlsRec Data
Fields" column in Table 1 have been modified. The enabled_ctrls_changes
field specifies which bits in the enabled_ctrls field have changed. If
the number of keyboard groups has changed, the num_groups_changed field
is set to True.
Table 1 shows the actual values for the individual mask bits used to se-
lect controls for modification and to enable and disable the control.
Note that the same mask bit is used to specify general modifications to
the parameters used to configure the control (which), and to enable and
disable the control (enabled_ctrls). The anomalies in the table (no "ok"
in column) are for controls that have no configurable attributes; and
for controls that are not boolean controls and therefore cannot be en-
abled or disabled.
Table 1 Xkb Controls
──────────────────────────────────────────────────────────────────────────────────
Control Control
Selection Relevant
Mask (which XkbControlsRec Boolean Control
parameter) DataFields enabled_ctrls bit Section
──────────────────────────────────────────────────────────────────────────────────
AccessXFeedback XkbAccessX- ax_options: XkbAccessX- 10.6.3
FeedbackMask XkbAX_*FBMask FeedbackMask
AccessXKeys XkbAccessXKeys- 10.6.1
Mask
AccessXTimeout XkbAccessX- ax_timeout XkbAccessX- 10.6.2
TimeoutMask axt_opts_mask TimeoutMask
axt_opts_values
axt_ctrls_mask
axt_ctrls_val-
ues
AudibleBell XkbAudibleBell- 9.2
Mask
AutoReset 10.1.2
BounceKeys XkbBounce- debounce_delay XkbBounceKeysMask 10.6.7
KeysMask
Detectable- 10.3.3
Autorepeat
EnabledControls XkbControls- enabled_ctrls Non-Boolean 10.1.1
EnabledMask Control
GroupsWrap XkbGroupsWrap- groups_wrap Non-Boolean 10.7.1
Mask Control
IgnoreGroupLock XkbIgnore- 10.7.3
GroupLockMask
IgnoreLockMods XkbIgnore- ignore_lock Non-Boolean 5.1
LockModsMask Control
InternalMods XkbInternal- internal Non-Boolean 5.1
ModsMask Control
MouseKeys Xkb- mk_dflt_btn XkbMouseKeysMask 10.5.1
MouseKeysMask
MouseKeysAccel XkbMouseKeys- mk_delay mk_in- XkbMouseKeys- 10.5.2
AccelMask terval AccelMask
mk_time_to_max
mk_max_speed
mk_curve
Overlay1 XkbOverlay1Mask 10.4
Overlay2 XkbOverlay2Mask 10.4
PerKeyRepeat XkbPerKey- per_key_repeat Non-Boolean 10.3.1
RepeatMask Control
RepeatKeys XkbRepeatKeys- repeat_delay XkbRepeatKeysMask 10.3
Mask
repeat_interval
SlowKeys XkbSlowKeysMask slow_keys_delay XkbSlowKeysMask 10.6.6
StickyKeys XkbStickyKeys- ax_options: XkbStickyKeysMask 10.6.8
Mask Xk-
bAX_TwoKeysMask
XkbAX_Latch-
ToLockMask
Table 2 shows the actual values for the individual mask bits used to se-
lect controls for modification and to enable and disable the control.
Note that the same mask bit is used to specify general modifications to
the parameters
used to configure the control (which), and to enable and disable the
control (enabled_ctrls). The anomalies in the table (no "ok" in column)
are for controls that have no configurable attributes; and for controls
that are not boolean controls and therefore cannot be enabled or dis-
abled.
Table 2 Controls Mask Bits
──────────────────────────────────────────────────────────────────────
Mask Bit which or Value
changed enabled
_ctrls _ctrls
──────────────────────────────────────────────────────────────────────
XkbRepeatKeysMask ok ok (1L<<0)
XkbSlowKeysMask ok ok (1L<<1)
XkbBounceKeysMask ok ok (1L<<2)
XkbStickyKeysMask ok ok (1L<<3)
XkbMouseKeysMask ok ok (1L<<4)
XkbMouseKeysAccelMask ok ok (1L<<5)
XkbAccessXKeysMask ok ok (1L<<6)
XkbAccessXTimeoutMask ok ok (1L<<7)
XkbAccessXFeedbackMask ok ok (1L<<8)
XkbAudibleBellMask ok (1L<<9)
XkbOverlay1Mask ok (1L<<10)
XkbOverlay2Mask ok (1L<<11)
XkbIgnoreGroupLockMask ok (1L<<12)
XkbGroupsWrapMask ok (1L<<27)
XkbInternalModsMask ok (1L<<28)
XkbIgnoreLockModsMask ok (1L<<29)
XkbPerKeyRepeatMask ok (1L<<30)
XkbControlsEnabledMask ok (1L<<31)
XkbAccessXOptionsMask ok ok (XkbStickyKeysMask |
XkbAccessXFeedbackMask)
XkbAllBooleanCtrlsMask ok (0x00001FFF)
XkbAllControlsMask ok (0xF8001FFF)
If you have an Xkb description with controls that have been modified and
an XkbControlsChangesRec that describes the changes that have been made,
the XkbChangeControls function provides a flexible method for updating
the controls in a server to match those in the changed keyboard descrip-
tion.
XkbChangeControls copies any controls fields specified by changes from
the keyboard description controls structure, xkb->ctrls, to the server
specified by dpy.
STRUCTURES
The XkbControlsChangesRec structure is defined as follows:
typedef struct _XkbControlsChanges {
unsigned int changed_ctrls; /* bits indicating changed control data */
unsigned int enabled_ctrls_changes; /* bits indicating enabled/disabled controls */
Bool num_groups_changed; /* True if number of keyboard groups changed */
} XkbControlsChangesRec,*XkbControlsChangesPtr;
SEE ALSO
XkbChangeControls(3), XkbChangeDeviceInfo(3), XkbChangeEnabledCon-
trols(3), XkbChangeMap(3), XkbChangeNames(3), XkbChangeTypesOfKey(3)
X Version 11 libX11 1.8.12 XkbChangeControls(3)
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