XkbSetControls  -  Copies  changes  to the X server based on a modified
   ctrls structure in a local copy of the keyboard description


   Bool XkbSetControls (Display *display, unsigned long which,  XkbDescPtr


   - display
          connection to X server

   - which
          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.

                           Table 1 Controls Mask Bits
   Mask Bit                 which or        enabled   Value
                            changed_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 |
   XkbAllBooleanCtrlsMask                   ok        (0x00001FFF)
   XkbAllControlsMask       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,
   XkbSetControls  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
   EnabledControls control. As such, to set a  specific  configuration  of
   enabled  and  disabled  boolean controls, you must set enabled_ctrls to
   the appropriate bits to enable only the controls you want  and  disable
   all  others,  then  specify  the  XkbControlsEnabledMask  in  a call to

   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
                  compatible  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
                  otherwise invalid


   XkbChangeEnabledControls(3), XkbFreeControls(3)


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