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'\" t
.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
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.\"
.TH XkbFreeClientMap __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbFreeClientMap \- Free memory used by the client map member of an XkbDescRec
structure
.SH SYNOPSIS
.HP
.B void XkbFreeClientMap
.BI "(\^XkbDescPtr " "xkb" "\^,"
.BI "unsigned int " "which" "\^,"
.BI "Bool " "free_all" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- xkb
keyboard description containing client map to free
.TP
.I \- which
mask identifying components of map to free
.TP
.I \- free_all
True => free all client components and map itself
.SH DESCRIPTION
.LP
.I XkbFreeClientMap
frees the components of client map specified by
.I which
in the XkbDescRec structure specified by the
.I xkb
parameter and sets the corresponding structure component values to NULL. The
.I which
parameter specifies a combination of the client map masks shown in Table 1.
If
.I free_all
is True,
.I which
is ignored;
.I XkbFreeClientMap
frees every non-NULL structure component in the client map, frees the
XkbClientMapRec
structure referenced by the
.I map
member of the
.I xkb
parameter, and sets the
.I map
member to NULL.
.TS
c s
l l
l lw(4i).
Table 1 XkbAllocClientMap Masks
_
Mask Effect
_
XkbKeyTypesMask T{
The type_count field specifies the number of entries to preallocate for the
types field of the client map. If the type_count field is less than
XkbNumRequiredTypes returns BadValue.
T}
.sp
XkbKeySymsMask T{
The min_key_code and max_key_code fields of the xkb parameter are used to
allocate the syms and key_sym_map fields of the client map. The fields are
allocated to contain the maximum number of entries necessary for max_key_code -
min_key_code + 1 keys.
T}
.sp
XkbModifierMapMask T{
The min_key_code and max_key_code fields of the xkb parameter are used to
allocate the modmap field of the client map. The field is allocated to contain
the maximum number of entries necessary for max_key_code - min_key_code + 1
keys.
T}
.TE
NOTE: The
.I min_key_code
and
.I max_key_code
fields of the
.I xkb
parameter must be legal values if the XkbKeySymsMask or XkbModifierMapMask masks
are set in the
.I which
parameter. If they are not valid,
.I XkbAllocClientMap
returns BadValue.
.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 2.
.TS
c s s
l l l
l l l.
Table 2 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
.I map
field of the complete Xkb keyboard description is a pointer to the Xkb client
map, which is
of type XkbClientMapRec:
.nf
typedef struct { /\(** Client Map */
unsigned char size_types; /\(** # occupied entries in types */
unsigned char num_types; /\(** # entries in types */
XkbKeyTypePtr types; /\(** vector of key types used by this keymap */
unsigned short size_syms; /\(** length of the syms array */
unsigned short num_syms; /\(** # entries in syms */
KeySym * syms; /\(** linear 2d tables of keysyms, 1 per key */
XkbSymMapPtr key_sym_map; /\(** 1 per keycode, maps keycode to syms */
unsigned char * modmap; /\(** 1 per keycode, real mods bound to key */
} XkbClientMapRec, *XkbClientMapPtr;
.fi
.SH DIAGNOSTICS
.TP 15
.B BadValue
An argument is out of range
.SH "SEE ALSO"
.BR XkbAllocClientMap (__libmansuffix__)
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