---
name: "XkbSetDetectableAutorepeat"
section: "3"
platform: "linux"
package: "libx11-dev"
version: "2:1.1.5-2"
release: "Debian 5.0 (Lenny)"
platforms: ["linux"]
url: "https://new.carta.tech/XkbSetDetectableAutorepeat"
---

# XkbSetDetectableAutorepeat(3)

Sets DetectableAutorepeat

## NAME

XkbSetDetectableAutorepeat - Sets DetectableAutorepeat

## SYNTAX

**Bool XkbSetDetectableAutorepeat** ( *display,* *detectable,* *supported\_rtrn* )\
\
       Display \* *display* ;\
\
       Bool  *detectable* ;\
\
       Bool \* *supported\_rtrn* ;

## ARGUMENTS

- *- display*

  connection to X server

- *- detectable*

  True =\> set DetectableAutorepeat

- *- supported\_rtrn*

  backfilled True if DetectableAutorepeat supported

## DESCRIPTION

Auto-repeat is the generation of multiple key events by a keyboard when the user  presses a key and holds it down. Keyboard hardware and device-dependent X server  software often implement auto-repeat by generating multiple KeyPress events with  no intervening KeyRelease event. The standard behavior of the X server is to  generate a KeyRelease event for every KeyPress event. If the keyboard hardware  and device-dependent software of the X server implement auto-repeat by  generating multiple KeyPress events, the device-independent part of the X server  by default synthetically generates a KeyRelease event after each KeyPress event.  This provides predictable behavior for X clients, but does not allow those  clients to detect the fact that a key is auto-repeating.

Xkb allows clients to request  *detectable auto-repeat.* If a client requests and the server supports DetectableAutorepeat, Xkb generates  KeyRelease events only when the key is physically released. If  DetectableAutorepeat is not supported or has not been requested, the server  synthesizes a KeyRelease event for each repeating KeyPress event it generates.

DetectableAutorepeat, unlike other controls, is not contained in the  XkbControlsRec structure, nor can it be enabled or disabled via the  EnabledControls control. Instead, query and set DetectableAutorepeat using  *XkbGetDetectableAutorepeat* and  *XkbSetDetectableAutorepeat.*

DetectableAutorepeat is a condition that applies to all keyboard devices for a  client's connection to a given X server; it cannot be selectively set for some  devices and not for others. For this reason, none of the Xkb library functions  involving DetectableAutorepeat involve a device specifier.

This request affects all keyboard activity for the requesting client only; other  clients still see the expected nondetectable auto-repeat behavior, unless they  have requested otherwise.

*XkbSetDetectableAutorepeat* sends a request to the server to set DetectableAutorepeat on for the current  client if  *detectable* is True, and off if  *detectable* is False; it then waits for a reply. If  *supported\_rtrn* is not NULL,  *XkbSetDetectableAutorepeat* backfills  *supported\_rtrn* with True if the server supports DetectableAutorepeat, and False if it does not. *XkbSetDetectableAutorepeat* returns the current state of DetectableAutorepeat for the requesting client:  True if DetectableAutorepeat is set, and False otherwise.

## RETURN VALUES

- True

  The  *XkbSetDetectableAutorepeat* function returns True if DetectableAutorepeat is set.

- False

  The  *XkbSetDetectableAutorepeat* function returns False if DetectableAutorepeat is not set.