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 1.8.2 XkbResizeKeyActions(3)
xorg-libX11 1.8.2 - Generated Sat Nov 19 06:25:00 CST 2022