XkbSetControls(3) XKB FUNCTIONS XkbSetControls(3)
XkbSetControls - Copies changes to the X server based on a modified
ctrls structure in a local copy of the keyboard description
Bool XkbSetControls ( display, which, xkb )
unsigned long which;
connection to X server
mask of controls requested
- xkb keyboard description for controls information
For each bit that is set in the which parameter, XkbSetControls sends
the corresponding values from the xkb->ctrls field to the server. Valid
values for which are any combination of the masks listed in Table 1
that have "ok" in the which column.
Table 1 shows the actual values for the individual mask bits used to
select 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 disabled.
c s s s l l l l l l l l l l l l. Table 1 Controls Mask Bits _ Mask
Bit which or enabled Value changed_ctrls _ctrls _ XkbRe-
peatKeysMask ok ok (1L<<0) XkbSlowKeysMask ok ok (1L<<1)
XkbBounceKeysMask ok ok (1L<<2) XkbStick-
yKeysMask ok ok (1L<<3) XkbMouseKeysMask ok ok (1L<<4)
XkbMouseKeysAccelMask ok ok (1L<<5) XkbAc-
cessXKeysMask ok ok (1L<<6) XkbAccessXTimeout-
Mask ok ok (1L<<7) XkbAccessXFeedbackMask ok ok (1L<<8)
XkbAudibleBellMask ok (1L<<9) XkbOver-
lay1Mask ok (1L<<10) XkbOverlay2Mask ok (1L<<11)
XkbIgnoreGroupLockMask ok (1L<<12) XkbGroupsWrap-
Mask ok (1L<<27) XkbInternalModsMask ok (1L<<28) XkbIg-
noreLockModsMask ok (1L<<29) XkbPerKeyRepeat-
Mask ok (1L<<30) XkbControlsEnabledMask ok (1L<<31)
XkbAccessXOptionsMask ok ok (XkbStickyKeysMask |
Mask ok (0x00001FFF) XkbAllControls-
Mask ok (0xF8001FFF)
If xkb->ctrls is NULL, the server does not support a compatible version
of Xkb, or the Xkb extension has not been properly initialized, XkbSet-
Controls returns False. Otherwise, it sends the request to the X server
and returns True.
Note that changes to attributes of controls in the XkbControlsRec
structure are apparent only when the associated control is enabled,
although the corresponding values are still updated in the X server.
For example, the repeat_delay and repeat_interval fields are ignored
unless the RepeatKeys control is enabled (that is, the X server's
equivalent of xkb->ctrls has XkbRepeatKeyMask set in enabled_ctrls).
It is permissible to modify the attributes of a control in one call to
XkbSetControls and enable the control in a subsequent call. See
XkbChangeEnabledControls for more information on enabling and disabling
Note that the enabled_ctrls field is itself a control - the EnabledCon-
trols control. As such, to set a specific configuration of enabled and
disabled boolean controls, you must set enabled_ctrls to the appropri-
ate bits to enable only the controls you want and disable all others,
then specify the XkbControlsEnabledMask in a call to XkbSetControls.
Because this is somewhat awkward if all you want to do is enable and
disable controls, and not modify any of their attributes, a convenience
function is also provided for this purpose, XkbChangeEnabledControls.
True The XkbSetControls function returns True when it sends
the request to the X server.
False The XkbSetControls function returns False when
xkb->ctrls is NULL, the server does not support a com-
patible version of Xkb, or the Xkb extension has not
been properly initialized.
BadAlloc Unable to allocate storage
BadMatch A compatible version of Xkb was not available in the
server or an argument has correct type and range, but is
X Version 11 libX11 1.1.5 XkbSetControls(3)