table of contents
XkbGetAccessXTimeout(3) | XKB FUNCTIONS | XkbGetAccessXTimeout(3) |
NAME¶
XkbGetAccessXTimeout - Queries the current AccessXTimeout options for a keyboard device
SYNOPSIS¶
Bool XkbGetAccessXTimeout (Display *display, unsigned int device_spec, unsigned short *timeout_rtrn, unsigned int *ctrls_mask_rtrn, unsigned int *ctrls_values_rtrn, unsigned short *options_mask_rtrn, unsigned short *options_values_rtrn);
ARGUMENTS¶
- - display
- unsigned short
- - device_spec
- device to query, or XkbUseCoreKbd
- - timeout_rtrn
- delay until AccessXTimeout, seconds
- - ctrls_mask_rtrn
- backfilled with controls to modify
- - ctrls_values_rtrn
- backfilled with on/off status for controls
- - options_mask_rtrn
- backfilled with ax_options to modify
- - options_values_rtrn
- backfilled with values for ax_options
DESCRIPTION¶
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.
XkbGetAccessXTimeout sends a request to the X server to obtain the current values for the AccessXTimeout attributes, waits for a reply, and backfills the values into the appropriate arguments. The parameters options_mask_rtrn and options_values_rtrn are backfilled with the options to modify and the values for ax_options, which is a field in the XkbControlsRec structure. XkbGetAccessXTimeout returns True if successful; if a compatible version of the Xkb extension is not available in the server, XkbGetAccessXTimeout returns False.
RETURN VALUES¶
- True
- The XkbGetAccessXTimeout returns True when it successfully sends a request to the X server to obtain the current values for the AccessXTimeout attributes, waits for a reply, and backfills the values into the appropriate arguments.
- False
- The XkbGetAccessXTimeout funtion returns False if a compatible version of the Xkb extension is not available in the server.
STRUCTURES¶
The XkbControlsRec structure is defined as follows: #define XkbMaxLegalKeyCode 255 #define XkbPerKeyBitArraySize ((XkbMaxLegalKeyCode+1)/8)
typedef struct {
unsigned char mk_dflt_btn; /∗ default button for keyboard driven mouse */
unsigned char num_groups; /∗ number of keyboard groups */
unsigned char groups_wrap; /∗ how to wrap out-of-bounds groups */
XkbModsRec internal; /∗ defines server internal modifiers */
XkbModsRec ignore_lock; /∗ modifiers to ignore when checking for grab */
unsigned int enabled_ctrls; /∗ 1 bit => corresponding boolean control enabled */
unsigned short repeat_delay; /∗ ms delay until first repeat */
unsigned short repeat_interval; /∗ ms delay between repeats */
unsigned short slow_keys_delay; /∗ ms minimum time key must be down to be ok */
unsigned short debounce_delay; /∗ ms delay before key reactivated */
unsigned short mk_delay; /∗ ms delay to second mouse motion event */
unsigned short mk_interval; /∗ ms delay between repeat mouse events */
unsigned short mk_time_to_max; /∗ # intervals until constant mouse move */
unsigned short mk_max_speed; /∗ multiplier for maximum mouse speed */
short mk_curve; /∗ determines mouse move curve type */
unsigned short ax_options; /∗ 1 bit => Access X option enabled */
unsigned short ax_timeout; /∗ seconds until Access X disabled */
unsigned short axt_opts_mask; /∗ 1 bit => options to reset on Access X timeout */
unsigned short axt_opts_values; /∗ 1 bit => turn option on, 0=> off */
unsigned int axt_ctrls_mask; /∗ which bits in enabled_ctrls to modify */
unsigned int axt_ctrls_values; /∗ values for new bits in enabled_ctrls */
unsigned char per_key_repeat[XkbPerKeyBitArraySize]; /∗ per key auto repeat */ } XkbControlsRec, *XkbControlsPtr;
libX11 1.6.7 | X Version 11 |