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X11R7.4 - man page for xkbsetaccessxtimeout (x11r4 section 3)

XkbSetAccessXTimeout(3) 		  XKB FUNCTIONS 		  XkbSetAccessXTimeout(3)

       XkbSetAccessXTimeout - Configures the AccessXTimeout options for a keyboard device

       Bool  XkbSetAccessXTimeout  (  display,	device_spec,  timeout,	ctrls_mask, ctrls_values,
       opts_mask, opts_values )
	     Display * display ;
	     unsigned int  device_spec ;
	     unsigned short  timeout ;
	     unsigned int  ctrls_mask ;
	     unsigned int  ctrls_values ;
	     unsigned short  opts_mask ;
	     unsigned short  opts_values ;

       - display
	      connection to X server

       - device_spec
	      device to configure, or XkbUseCoreKbd

       - timeout
	      seconds idle until AccessXTimeout occurs

       - ctrls_mask
	      boolean controls to modify

       - ctrls_values
	      new bits for controls selected by ctrls_mask

       - opts_mask
	      ax_options to change

       - opts_values
	      new bits for ax_options selected by opts_mask

       In environments where computers are shared, features such as SlowKeys present  a  problem:
       if  SlowKeys  is  on,  the  keyboard  can  appear  to be unresponsive because keys are not
       accepted until they are held for a certain period of time. To help solve this problem, Xkb
       provides  an  AccessXTimeout control to automatically change the enabled/disabled state of
       any boolean controls and to change the value of the AccessXKeys and  AccessXFeedback  con-
       trol attributes if the keyboard is idle for a specified period of time.

       When  a	timeout as specified by AccessXTimeout occurs and a control is consequently modi-
       fied, Xkb generates an XkbControlsNotify event. For more information on	XkbControlsNotify

       timeout	specifies the number of seconds the keyboard must be idle before the controls are
       modified.  ctrls_mask  specifies  what  controls  are  to  be  enabled  or  disabled,  and
       ctrls_values  specifies whether those controls are to be enabled or disabled. The bit val-
       ues correspond to those for enabling and disabling  boolean  controls  using  XkbChangeEn-
	The  opts_mask	field  specifies  which attributes of the AccessXKeys and AccessXFeedback
       controls are to be changed, and opts_values specifies the new values  for  those  options.
       The bit values correspond to those for the ax_options field of an XkbDescRec.

       XkbSetAccessXTimeout  sends  a  request	to  configure  the  AccessXTimeout control to the
       server. It does not wait for a reply, and normally returns True. If a  compatible  version
       of the Xkb extension is not available in the server, XkbSetAccessXTimeout returns False.

       True	      The XkbSetAccessXTimeout function returns True when a compatible version of
		      the Xkb extension is available in the server.

       False	      The XkbSetAccessXTimeout function returns False when a  compatible  version
		      of the Xkb extension is not available in the server.

       The  complete  description  of  an  Xkb	keyboard is given by an XkbDescRec. The component
       structures in the XkbDescRec represent the major Xkb components.

       typedef struct {
	  struct _XDisplay * display;	   /* connection to X server */
	  unsigned short     flags;	   /* private to Xkb, do not modify */
	  unsigned short     device_spec;  /* device of interest */
	  KeyCode	     min_key_code; /* minimum keycode for device */
	  KeyCode	     max_key_code; /* maximum keycode for device */
	  XkbControlsPtr     ctrls;	   /* controls */
	  XkbServerMapPtr    server;	   /* server keymap */
	  XkbClientMapPtr    map;	   /* client keymap */
	  XkbIndicatorPtr    indicators;   /* indicator map */
	  XkbNamesPtr	     names;	   /* names for all components */
	  XkbCompatMapPtr    compat;	   /* compatibility map */
	  XkbGeometryPtr     geom;	   /* physical geometry of keyboard */
       } XkbDescRec, *XkbDescPtr;

       The display field points to an X display structure. The flags  field  is  private  to  the
       library:  modifying flags may yield unpredictable results. The device_spec field specifies
       the device identifier of the keyboard input device, or XkbUseCoreKeyboard, which specifies
       the  core  keyboard device. The min_key_code and max_key_code fields specify the least and
       greatest keycode that can be returned by the keyboard.

       Each structure component has a corresponding mask bit that is used in  function	calls  to
       indicate that the structure should be manipulated in some manner, such as allocating it or
       freeing it. These masks and their relationships to the fields in the XkbDescRec are  shown
       in Table 1.

	       Table 1 Mask Bits for XkbDescRec
       Mask Bit 	      XkbDescRec Field	 Value
       XkbControlsMask	      ctrls		 (1L<<0)
       XkbServerMapMask       server		 (1L<<1)
       XkbIClientMapMask      map		 (1L<<2)
       XkbIndicatorMapMask    indicators	 (1L<<3)
       XkbNamesMask	      names		 (1L<<4)
       XkbCompatMapMask       compat		 (1L<<5)
       XkbGeometryMask	      geom		 (1L<<6)
       XkbAllComponentsMask   All Fields	 (0x7f)

       The structure for the XkbControlsNotify event is defined as follows:

	   typedef struct {
	       int	     type;	    /* Xkb extension base event code */
	       unsigned long serial;	    /* X server serial number for event */
	       Bool	     send_event;    /* True => synthetically generated */
	       Display *     display;	    /* server connection where event generated */
	       Time	     time;	    /* server time when event generated */
	       int	     xkb_type;	    /* XkbCompatMapNotify */
	       int	     device;	    /* Xkb device ID, will not be XkbUseCoreKbd */
	       unsigned int  changed_ctrls; /* bits indicating which controls data have changed*/
	       unsigned int  enabled_ctrls; /* controls currently enabled in server */
	       unsigned int  enabled_ctrl_changes; /* bits indicating enabled/disabled controls */
	       int	     num_groups;    /* current number of keyboard groups */
	       KeyCode	     keycode;	    /* != 0 => keycode of key causing change */
	       char	     event_type;    /* Type of event causing change */
	       char	     req_major;     /* major event code of event causing change */
	       char	     req_minor;     /* minor event code of event causing change */
	   } XkbControlsNotifyEvent;


X Version 11				   libX11 1.2.1 		  XkbSetAccessXTimeout(3)

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