131 lines
4.5 KiB
Groff
131 lines
4.5 KiB
Groff
.\" 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 XkbVirtualModsToReal __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
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.SH NAME
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XkbVirtualModsToReal \- Determines the mapping of virtual modifiers to core X
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protocol modifiers
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.SH SYNOPSIS
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.HP
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.B Bool XkbVirtualModsToReal
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.BI "(\^XkbDescPtr " "xkb" "\^,"
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.BI "unsigned int " "virtual_mask" "\^,"
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.BI "unsigned int *" "mask_rtrn" "\^);"
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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 for input device
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.TP
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.I \- virtual_mask
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virtual modifier mask to translate
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.TP
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.I \- mask_rtrn
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backfilled with real modifiers
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.SH DESCRIPTION
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.LP
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Xkb maintains a
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.I virtual modifier mapping,
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which lists the virtual modifiers associated with, or bound to, each key. The
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real modifiers bound to a virtual modifier always include all of the modifiers
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bound to any of the keys that specify that virtual modifier in their virtual
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modifier mapping. The
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.I server.vmodmap
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array indicates which virtual modifiers are bound to each key; each entry is a
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bitmask for the virtual modifier bits. The
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.I server.vmodmap
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array is indexed by keycode.
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The
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.I vmodmap
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and
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.I vmods
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members of the server map are the "master" virtual modifier definitions. Xkb
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automatically propagates any changes to these fields to all other fields that
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use virtual modifier mappings.
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For example, if Mod3 is bound to the Num_Lock key by the core protocol modifier
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mapping, and the NumLock virtual modifier is bound to they Num_Lock key by the
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virtual modifier mapping, Mod3 is added to the set of modifiers associated with
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NumLock.
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The virtual modifier mapping is normally updated whenever actions are
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automatically applied to symbols and few applications should need to change the
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virtual modifier mapping explicitly.
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Use
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.I XkbGetMap
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to get the virtual modifiers from the server or use
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.I XkbGetVirtualMods
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to update a local copy of the virtual modifiers bindings from the server. To set
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the binding of a virtual modifier to a real modifier, use
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.I XkbGetVirtualMods
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If the keyboard description defined by
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.I xkb
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includes bindings for virtual modifiers,
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.I XkbVirtualModsToReal
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uses those bindings to determine the set of real modifiers that correspond to
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the set of virtual modifiers specified in
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.I virtual_mask.
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The
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.I virtual_mask
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parameter is a mask specifying the virtual modifiers to translate; the i-th bit
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(0 relative) of the mask represents the i-th virtual modifier. If
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.I mask_rtrn
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is non-NULL,
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.I XkbVirtualModsToReal
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backfills it with the resulting real modifier mask. If the keyboard description
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in
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.I xkb
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does not include virtual modifier bindings,
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.I XkbVirtualModsToReal
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returns False; otherwise, it returns True.
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.SH "RETURN VALUES"
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.TP 15
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True
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The
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.I XkbVirtualModsToReal
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function returns True if the keyboard description
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in
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.I xkb
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does include virtual modifier bindings.
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.TP 15
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False
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The
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.I XkbVirtualModsToReal
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function returns False if the keyboard description
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in
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.I xkb
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does not include virtual modifier bindings.
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.SH "SEE ALSO"
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.BR XkbGetMap (__libmansuffix__),
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.BR XkbGetVirtualMods (__libmansuffix__)
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.SH NOTES
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.LP
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It is possible for a local (client-side) keyboard description (the
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.I xkb
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parameter) to not contain any virtual modifier information (simply because the
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client has not requested it) while the server's corresponding definition may
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contain virtual modifier information.
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