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XkbAllocControls

Section: XKB FUNCTIONS (3)
Updated: libX11 1.6.3
Index Return to Main Contents
 

NAME

XkbAllocControls - Allocates an XkbControlsRec structure in the XkbDescRec  

SYNOPSIS

Status XkbAllocControls (XkbDescPtr xkb, unsigned int which);
     
 

ARGUMENTS

- xkb
Xkb description in which to allocate ctrls rec
- which
mask of components of ctrls to allocate
 

DESCRIPTION

The need to allocate an XkbControlsRec structure seldom arises; Xkb creates one when an application calls XkbGetControls or a related function. For those situations where there is not an XkbControlsRec structure allocated in the XkbDescRec, allocate one by calling XkbAllocControls.

XkbAllocControls allocates the ctrls field of the xkb parameter, initializes all fields to zero, and returns Success. If the ctrls field is not NULL, XkbAllocControls simply returns Success. If xkb is NULL, XkbAllocControls reports a BadMatch error. If the ctrls field could not be allocated, it reports a BadAlloc error.

The which mask specifies the individual fields of the ctrls structure to be allocated and can contain any of the valid masks defined in Table 1. (SHOULD THIS COMMENT BE LEFT IN????) Because none of the currently existing controls have any structures associated with them, which is currently of little practical value in this call.

Table 1 shows the actual values for the individual mask bits used to select controls for modification and to enable and disable the control. Note that the same mask bit is used to specify general modifications to the parameters used to configure the control (which), and to enable and disable the control (enabled_ctrls). The anomalies in the table (no "ok" in column) are for controls that have no configurable attributes; and for controls that are not boolean controls and therefore cannot be enabled or disabled.

Table 1 Controls Mask Bits

Mask Bitwhich orenabledValue
changed_ctrls_ctrls

XkbRepeatKeysMaskokok(1L<<0)
XkbSlowKeysMaskokok(1L<<1)
XkbBounceKeysMaskokok(1L<<2)
XkbStickyKeysMaskokok(1L<<3)
XkbMouseKeysMaskokok(1L<<4)
XkbMouseKeysAccelMaskokok(1L<<5)
XkbAccessXKeysMaskokok(1L<<6)
XkbAccessXTimeoutMaskokok(1L<<7)
XkbAccessXFeedbackMaskokok(1L<<8)
XkbAudibleBellMaskok(1L<<9)
XkbOverlay1Maskok(1L<<10)
XkbOverlay2Maskok(1L<<11)
XkbIgnoreGroupLockMaskok(1L<<12)
XkbGroupsWrapMaskok(1L<<27)
XkbInternalModsMaskok(1L<<28)
XkbIgnoreLockModsMaskok(1L<<29)
XkbPerKeyRepeatMaskok(1L<<30)
XkbControlsEnabledMaskok(1L<<31)
XkbAccessXOptionsMaskokok(XkbStickyKeysMask |
XkbAccessXFeedbackMask)
XkbAllBooleanCtrlsMaskok(0x00001FFF)
XkbAllControlsMaskok(0xF8001FFF)
 

RETURN VALUES

SUCCESS
allocates the ctrls field of the xkb parameter, initializes all fields to zero

the ctrls field is not NULL

 

DIAGNOSTICS

BadAlloc
Unable to allocate storage
BadMatch
A compatible version of Xkb was not available in the server or an argument has correct type and range, but is otherwise invalid
 

SEE ALSO

XkbGetControls(3)


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
RETURN VALUES
DIAGNOSTICS
SEE ALSO


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