XkbResizeKeyActions(3) XKB FUNCTIONS XkbResizeKeyActions(3)

NAME

XkbResizeKeyActions - Change the number of actions bound to a key

SYNOPSIS

XkbAction * XkbResizeKeyActions (XkbDescRec *xkb, int key, int
needed);

ARGUMENTS

xkb keyboard description to change

key keycode of key to change

needed new number of actions required

DESCRIPTION

The xkb parameter points to the keyboard description containing the
key whose number of actions is to be changed. The key parameter is
the keycode of the key to change, and needed specifies the new number
of actions required for the key.

XkbResizeKeyActions reserves the space needed for the actions and
returns a pointer to the beginning of the new array that holds the
actions. It can change the acts, num_acts, and size_acts fields of
xkb->server if it is necessary to reallocate the acts array.

If needed is greater than the current number of keysyms for the key,
XkbResizeKeyActions initializes all new actions in the array to
NoAction.

Because the number of actions needed by a key is normally computed as
width * number of groups, and XkbResizeKeyActions does not modify
either the width or number of groups for the key, a discrepancy
exists on return from XkbResizeKeyActions between the space allocated
for the actions and the number required. The unused entries in the
list of actions returned by XkbResizeKeyActions are not preserved
across future calls to any of the map editing functions, so you must
update the key actions (which updates the width and number of groups
for the key) before calling another allocator function. A call to
XkbChangeTypesOfKey updates these.

If any allocation errors occur while resizing the number of actions
bound to the key, XkbResizeKeyActions returns NULL.

SEE ALSO

XkbChangeTypesOfKey(3), XkbResizeKeySyms(3)

NOTES

A change to the number of actions bound to a key should be
accompanied by a change in the number of symbols bound to a key.
Refer to XkbResizeKeySyms for more information on changing the number
of symbols bound to a key.

X Version 11 libX11 1.8.10 XkbResizeKeyActions(3)