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Manual Section... (3) - page: XkbGetAccessXTimeout

 

NAME

XkbGetAccessXTimeout - Queries the current AccessXTimeout options for a keyboard device  

SYNOPSIS

Bool XkbGetAccessXTimeout ( display, device_spec, timeout_rtrn, ctrls_mask_rtrn, ctrls_values_rtrn, options_mask_rtrn, options_values_rtrn )

      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;


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
RETURN VALUES
STRUCTURES

This document was created by man2html, using the manual pages.
Time: 15:27:35 GMT, June 11, 2010

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