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'\" t
.\" Copyright (c) 1999 - Sun Microsystems, Inc.
.\" All rights reserved.
.\" 
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.\"
.TH XkbAllocCompatMap __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbAllocCompatMap \- Allocate a new compatibility map if you do not already have one available
.SH SYNOPSIS
.HP
.B Status XkbAllocCompatMap
.BI "(\^XkbDescPtr " "xkb" "\^,"
.BI "unsigned int " "which" "\^,"
.BI "unsigned int " "num_si" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- xkb
keyboard description in which to allocate compat map
.TP
.I \- which
mask of compatibility map components to allocate
.TP
.I \- num_si
number of symbol interpretations to allocate
.SH DESCRIPTION
.LP
.I xkb 
specifies the keyboard description for which compatibility maps are to be allocated. The compatibility map is the 
.I compat 
field in this structure.

.I which 
specifies the compatibility map components to be allocated (see XkbGetCompatMap). 
.I which 
is an inclusive OR of the bits shown in Table 1.

.TS
c s s
l l l.
Table 1 Compatibility Map Component Masks
_
Mask	Value	Affecting
_
XkbSymInterpMask	(1<<0)	Symbol interpretations
XkbGroupCompatMask	(1<<1)	Group maps
XkbAllCompatMask	(0x3)	All compatibility map components
.TE

.I num_si 
specifies the total number of entries to allocate in the symbol interpretation vector
.I (xkb.compat.sym_interpret).

.I XkbAllocCompatMap 
returns Success if successful, BadMatch if 
.I xkb 
is NULL, or BadAlloc if errors are encountered when attempting to allocate storage.
.SH STRUCTURES
.LP
.nf

    typedef struct {
        KeySym            sym;          /\(** keysym of interest or NULL */
        unsigned char     flags;        /\(** XkbSI_AutoRepeat, XkbSI_LockingKey */
        unsigned char     match;        /\(** specifies how mods is interpreted */
        unsigned char     mods;         /\(** modifier bits, correspond to eight real modifiers */
        unsigned char     virtual_mod;  /\(** 1 modifier to add to key virtual mod map */
        XkbAnyAction      act;          /\(** action to bind to symbol position on key */
    } XkbSymInterpretRec,*XkbSymInterpretPtr;
    
.fi
.SH DIAGNOSTICS
.TP 15
.B BadAlloc
Unable to allocate storage
.TP 15
.B BadMatch
A compatible version of Xkb was not available in the server or an argument has correct type and range, but is otherwise invalid
.SH "SEE ALSO"
.BR XkbGetCompatMap (__libmansuffix__)
.SH NOTES
.LP
Note that symbol interpretations in a compatibility map (the 
.I sym_interpret 
vector of XkbSymInterpretRec structures) are also allocated using this same function. To ensure that there is sufficient space in the symbol interpretation vector for entries to be added, use
.I XkbAllocCompatMap 
specifying 
.I which 
as XkbSymInterpretMask and the number of free symbol interpretations needed in 
.I num_si.