'\" t .\" Copyright (c) 1999, Oracle and/or its affiliates. .\" .\" Permission is hereby granted, free of charge, to any person obtaining a .\" copy of this software and associated documentation files (the "Software"), .\" to deal in the Software without restriction, including without limitation .\" the rights to use, copy, modify, merge, publish, distribute, sublicense, .\" and/or sell copies of the Software, and to permit persons to whom the .\" Software is furnished to do so, subject to the following conditions: .\" .\" The above copyright notice and this permission notice (including the next .\" paragraph) shall be included in all copies or substantial portions of the .\" Software. .\" .\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR .\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, .\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL .\" THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER .\" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING .\" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER .\" DEALINGS IN THE SOFTWARE. .\" .TH XkbSetAccessXTimeout 3 "libX11 1.8.6" "X Version 11" "XKB FUNCTIONS" .SH NAME XkbSetAccessXTimeout \- Configures the AccessXTimeout options for a keyboard device .SH SYNOPSIS .HP .B Bool XkbSetAccessXTimeout .BI "(\^Display *" "display" "\^," .BI "unsigned int " "device_spec" "\^," .BI "unsigned short " "timeout" "\^," .BI "unsigned int " "ctrls_mask" "\^," .BI "unsigned int " "ctrls_values" "\^," .BI "unsigned short " "opts_mask" "\^," .BI "unsigned short " "opts_values" "\^);" .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 (3)