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XkbVirtualModsToReal(3) XKB FUNCTIONS XkbVirtualModsToReal(3) NAME XkbVirtualModsToReal - Determines the mapping of virtual modifiers to core X protocol modifiers SYNOPSIS Bool XkbVirtualModsToReal (XkbDescPtr xkb, unsigned int virtual_mask, un- signed int *mask_rtrn); ARGUMENTS xkb keyboard description for input device virtual_mask virtual modifier mask to translate mask_rtrn backfilled with real modifiers DESCRIPTION Xkb maintains a virtual modifier mapping, which lists the virtual modifiers associated with, or bound to, each key. The real modifiers bound to a vir- tual modifier always include all of the modifiers bound to any of the keys that specify that virtual modifier in their virtual modifier mapping. The server.vmodmap array indicates which virtual modifiers are bound to each key; each entry is a bitmask for the virtual modifier bits. The server.vmodmap array is indexed by keycode. The vmodmap and vmods members of the server map are the "master" virtual modifier definitions. Xkb automatically propagates any changes to these fields to all other fields that use virtual modifier mappings. For example, if Mod3 is bound to the Num_Lock key by the core protocol mod- ifier mapping, and the NumLock virtual modifier is bound to they Num_Lock key by the virtual modifier mapping, Mod3 is added to the set of modifiers associated with NumLock. The virtual modifier mapping is normally updated whenever actions are auto- matically applied to symbols and few applications should need to change the virtual modifier mapping explicitly. Use XkbGetMap to get the virtual modifiers from the server or use Xk- bGetVirtualMods to update a local copy of the virtual modifiers bindings from the server. To set the binding of a virtual modifier to a real modi- fier, use XkbGetVirtualMods If the keyboard description defined by xkb includes bindings for virtual modifiers, XkbVirtualModsToReal uses those bindings to determine the set of real modifiers that correspond to the set of virtual modifiers specified in virtual_mask. The virtual_mask parameter is a mask specifying the virtual modifiers to translate; the i-th bit (0 relative) of the mask represents the i-th virtual modifier. If mask_rtrn is non-NULL, XkbVirtualModsToReal backfills it with the resulting real modifier mask. If the keyboard de- scription in xkb does not include virtual modifier bindings, XkbVirtualMod- sToReal returns False; otherwise, it returns True. RETURN VALUES True The XkbVirtualModsToReal function returns True if the key- board description in xkb does include virtual modifier bind- ings. False The XkbVirtualModsToReal function returns False if the key- board description in xkb does not include virtual modifier bindings. SEE ALSO XkbGetMap(3), XkbGetVirtualMods(3) NOTES It is possible for a local (client-side) keyboard description (the xkb pa- rameter) to not contain any virtual modifier information (simply because the client has not requested it) while the server's corresponding defini- tion may contain virtual modifier information. X Version 11 libX11 1.8.13 XkbVirtualModsToReal(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUES | SEE ALSO | NOTES
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