XkbSetAccessXTimeout.man [plain text]
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.TH XkbSetAccessXTimeout __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbSetAccessXTimeout \- Configures the AccessXTimeout options for a keyboard
device
.SH SYNOPSIS
.B Bool XkbSetAccessXTimeout
(
.I display,
.I device_spec,
.I timeout,
.I ctrls_mask,
.I ctrls_values,
.I opts_mask,
.I opts_values
)
.br
Display *\fI display \fP\^;
.br
unsigned int \fI device_spec \fP\^;
.br
unsigned short \fI timeout \fP\^;
.br
unsigned int \fI ctrls_mask \fP\^;
.br
unsigned int \fI ctrls_values \fP\^;
.br
unsigned short \fI opts_mask \fP\^;
.br
unsigned short \fI opts_values \fP\^;
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- display
connection to X server
.TP
.I \- device_spec
device to configure, or XkbUseCoreKbd
.TP
.I \- timeout
seconds idle until AccessXTimeout occurs
.TP
.I \- ctrls_mask
boolean controls to modify
.TP
.I \- ctrls_values
new bits for controls selected by ctrls_mask
.TP
.I \- opts_mask
ax_options to change
.TP
.I \- opts_values
new bits for ax_options selected by opts_mask
.SH DESCRIPTION
.LP
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 control 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 modified, Xkb generates an XkbControlsNotify event. For more
information on XkbControlsNotify events.
.I timeout
specifies the number of seconds the keyboard must be idle before the controls
are modified.
.I ctrls_mask
specifies what controls are to be enabled or disabled, and
.I ctrls_values
specifies whether those controls are to be enabled or disabled. The bit values
correspond to those for enabling and disabling boolean controls using
.I XkbChangeEnabledControls.
The
.I opts_mask
field specifies which attributes of the AccessXKeys and AccessXFeedback controls
are to be changed, and
.I opts_values
specifies the new values for those options. The bit values correspond to those
for the
.I ax_options
field of an XkbDescRec.
.I 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,
.I XkbSetAccessXTimeout
returns False.
.SH "RETURN VALUES"
.TP 15
True
The
.I XkbSetAccessXTimeout
function returns True when a compatible version of the Xkb extension is available in the server.
.TP 15
False
The
.I XkbSetAccessXTimeout
function returns False when a compatible version of the Xkb extension is not available in the server.
.SH STRUCTURES
.LP
The complete description of an Xkb keyboard is given by an XkbDescRec. The component
structures in the XkbDescRec represent the major Xkb components.
.nf
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;
.fi
The
.I display
field points to an X display structure. The
.I flags field is private to the library: modifying
.I flags
may yield unpredictable results. The
.I device_spec
field specifies the device identifier of the keyboard input device, or
XkbUseCoreKeyboard, which specifies the core keyboard device. The
.I min_key_code
and
.I 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.
.TS
c s s
l l l
l l l.
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)
.TE
The structure for the XkbControlsNotify event is defined as follows:
.nf
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;
.fi
.SH "SEE ALSO"
.BR XkbChangeEnabledControls (__libmansuffix__)