202 lines
6.3 KiB
Groff
202 lines
6.3 KiB
Groff
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'\" t
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.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining a
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.\" copy of this software and associated documentation files (the "Software"),
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.\" to deal in the Software without restriction, including without limitation
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.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
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.\" and/or sell copies of the Software, and to permit persons to whom the
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.\" Software is furnished to do so, subject to the following conditions:
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.\"
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.\" The above copyright notice and this permission notice (including the next
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.\" paragraph) shall be included in all copies or substantial portions of the
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.\" Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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.\" THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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.\" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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.\" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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.\" DEALINGS IN THE SOFTWARE.
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.\"
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.TH XkbFreeClientMap __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
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.SH NAME
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XkbFreeClientMap \- Free memory used by the client map member of an XkbDescRec
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structure
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.SH SYNOPSIS
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.HP
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.B void XkbFreeClientMap
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.BI "(\^XkbDescPtr " "xkb" "\^,"
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.BI "unsigned int " "which" "\^,"
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.BI "Bool " "free_all" "\^);"
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.if n .ti +5n
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.if t .ti +.5i
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.SH ARGUMENTS
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.TP
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.I \- xkb
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keyboard description containing client map to free
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.TP
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.I \- which
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mask identifying components of map to free
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.TP
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.I \- free_all
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True => free all client components and map itself
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.SH DESCRIPTION
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.LP
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.I XkbFreeClientMap
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frees the components of client map specified by
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.I which
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in the XkbDescRec structure specified by the
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.I xkb
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parameter and sets the corresponding structure component values to NULL. The
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.I which
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parameter specifies a combination of the client map masks shown in Table 1.
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If
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.I free_all
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is True,
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.I which
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is ignored;
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.I XkbFreeClientMap
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frees every non-NULL structure component in the client map, frees the
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XkbClientMapRec
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structure referenced by the
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.I map
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member of the
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.I xkb
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parameter, and sets the
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.I map
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member to NULL.
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.TS
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c s
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l l
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l lw(4i).
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Table 1 XkbAllocClientMap Masks
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_
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Mask Effect
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_
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XkbKeyTypesMask T{
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The type_count field specifies the number of entries to preallocate for the
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types field of the client map. If the type_count field is less than
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XkbNumRequiredTypes returns BadValue.
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T}
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.sp
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XkbKeySymsMask T{
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The min_key_code and max_key_code fields of the xkb parameter are used to
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allocate the syms and key_sym_map fields of the client map. The fields are
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allocated to contain the maximum number of entries necessary for max_key_code -
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min_key_code + 1 keys.
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T}
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.sp
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XkbModifierMapMask T{
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The min_key_code and max_key_code fields of the xkb parameter are used to
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allocate the modmap field of the client map. The field is allocated to contain
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the maximum number of entries necessary for max_key_code - min_key_code + 1
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keys.
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T}
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.TE
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NOTE: The
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.I min_key_code
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and
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.I max_key_code
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fields of the
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.I xkb
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parameter must be legal values if the XkbKeySymsMask or XkbModifierMapMask masks
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are set in the
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.I which
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parameter. If they are not valid,
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.I XkbAllocClientMap
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returns BadValue.
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.SH STRUCTURES
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.LP
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The complete description of an Xkb keyboard is given by an XkbDescRec. The
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component
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structures in the XkbDescRec represent the major Xkb components.
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.nf
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typedef struct {
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struct _XDisplay * display; /\&* connection to X server */
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unsigned short flags; /\&* private to Xkb, do not modify */
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unsigned short device_spec; /\&* device of interest */
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KeyCode min_key_code; /\&* minimum keycode for device */
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KeyCode max_key_code; /\&* maximum keycode for device */
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XkbControlsPtr ctrls; /\&* controls */
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XkbServerMapPtr server; /\&* server keymap */
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XkbClientMapPtr map; /\&* client keymap */
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XkbIndicatorPtr indicators; /\&* indicator map */
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XkbNamesPtr names; /\&* names for all components */
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XkbCompatMapPtr compat; /\&* compatibility map */
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XkbGeometryPtr geom; /\&* physical geometry of keyboard */
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} XkbDescRec, *XkbDescPtr;
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.fi
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The
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.I display
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field points to an X display structure. The
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.I flags field is private to the library: modifying
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.I flags
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may yield unpredictable results. The
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.I device_spec
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field specifies the device identifier of the keyboard input device, or
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XkbUseCoreKeyboard, which specifies the core keyboard device. The
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.I min_key_code
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and
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.I max_key_code
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fields specify the least and greatest keycode that can be returned by the
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keyboard.
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Each structure component has a corresponding mask bit that is used in function
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calls to
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indicate that the structure should be manipulated in some manner, such as
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allocating it
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or freeing it. These masks and their relationships to the fields in the
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XkbDescRec are
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shown in Table 2.
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.TS
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c s s
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l l l
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l l l.
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Table 2 Mask Bits for XkbDescRec
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_
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Mask Bit XkbDescRec Field Value
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_
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XkbControlsMask ctrls (1L<<0)
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XkbServerMapMask server (1L<<1)
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XkbIClientMapMask map (1L<<2)
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XkbIndicatorMapMask indicators (1L<<3)
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XkbNamesMask names (1L<<4)
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XkbCompatMapMask compat (1L<<5)
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XkbGeometryMask geom (1L<<6)
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XkbAllComponentsMask All Fields (0x7f)
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.TE
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The
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.I map
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field of the complete Xkb keyboard description is a pointer to the Xkb client
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map, which is
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of type XkbClientMapRec:
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.nf
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typedef struct { /\&* Client Map */
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unsigned char size_types; /\&* # occupied entries in types */
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unsigned char num_types; /\&* # entries in types */
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XkbKeyTypePtr types; /\&* vector of key types used by this keymap */
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unsigned short size_syms; /\&* length of the syms array */
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unsigned short num_syms; /\&* # entries in syms */
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KeySym * syms; /\&* linear 2d tables of keysyms, 1 per key */
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XkbSymMapPtr key_sym_map; /\&* 1 per keycode, maps keycode to syms */
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unsigned char * modmap; /\&* 1 per keycode, real mods bound to key */
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} XkbClientMapRec, *XkbClientMapPtr;
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.fi
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.SH DIAGNOSTICS
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.TP 15
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.B BadValue
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An argument is out of range
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.SH "SEE ALSO"
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.BR XkbAllocClientMap (__libmansuffix__)
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