spiegel-keyman/core/docs/api/changes.md
Marc Durdin 8b88195aec
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docs(core): rebuild Core docs from .h and remove broken hotdoc config
Rebuild the API docs using api-header-extractor script, and add the
script to the normal build for Core so that it doesn't get out of sync
again.

Hotdoc configuration has not been used for a while; it is currently
broken and we haven't got any docs generated by it anyway, so remove
from repo.

Remove largely duplicate BUILDING.md and old json-schema.md.

Test-bot: skip
2026-04-11 17:33:07 +02:00

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---
title: Changes - Keyman Core API
---
### Changes in 19.0
* The JSON introspection APIs (which were not fully implemented),
`km_core_state_options_to_json` and `km_core_state_to_json`, have been
removed.
## Changes between 16.0 and 17.0
* The namespace identifier has changed from `km_kbp_` to `km_core_`.
* Most context APIs are now private, and [km_core_state_context_set_if_needed] is the
primary context function. Private APIs are available in
`keyman_core_api_context.h`.
* The action queue APIs are now private and deprecated. Instead, use
[km_core_state_get_actions]. Private APIs are available in
`keyman_core_api_actions.h`.
* Debug APIs are available in `keyman_core_api_debug.h`.
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[km_core_cu]: background#km_core_cu "km_core_cu type"
[km_core_usv]: background#km_core_usv "km_core_usv type"
[km_core_virtual_key]: background#km_core_virtual_key "km_core_virtual_key type"
[km_core_status]: background#km_core_status "km_core_status type"
[km_core_modifier_state]: background#km_core_modifier_state "km_core_modifier_state type"
[km_core_keyboard]: background#km_core_keyboard "km_core_keyboard struct"
[km_core_state]: background#km_core_state "km_core_state struct"
[km_core_options]: background#km_core_options "km_core_options struct"
[km_core_status_codes]: background#km_core_status_codes "km_core_status_codes enum"
[km_core_attr]: background#km_core_attr "km_core_attr struct"
[km_core_tech_value]: background#km_core_tech_value "km_core_tech_value enum"
[km_core_get_engine_attrs]: background#km_core_get_engine_attrs "km_core_get_engine_attrs function"
[km_core_bool]: background#km_core_bool "km_core_bool enum"
[km_core_caps_state]: state#km_core_caps_state "km_core_caps_state enum"
[km_core_actions]: state#km_core_actions "km_core_actions struct"
[km_core_state_get_actions]: state#km_core_state_get_actions "km_core_state_get_actions function"
[km_core_context_status]: state#km_core_context_status "km_core_context_status enum"
[km_core_state_context_set_if_needed]: state#km_core_state_context_set_if_needed "km_core_state_context_set_if_needed function"
[km_core_state_context_clear]: state#km_core_state_context_clear "km_core_state_context_clear function"
[km_core_option_scope]: options#km_core_option_scope "km_core_option_scope enum"
[km_core_option_item]: options#km_core_option_item "km_core_option_item struct"
[km_core_options_list_size]: options#km_core_options_list_size "km_core_options_list_size function"
[km_core_state_options_update]: options#km_core_state_options_update "km_core_state_options_update function"
[km_core_keyboard_attrs]: keyboards#km_core_keyboard_attrs "km_core_keyboard_attrs struct"
[km_core_keyboard_key]: keyboards#km_core_keyboard_key "km_core_keyboard_key struct"
[km_core_keyboard_imx]: keyboards#km_core_keyboard_imx "km_core_keyboard_imx struct"
[km_core_keyboard_load_from_blob]: keyboards#km_core_keyboard_load_from_blob "km_core_keyboard_load_from_blob function"
[km_core_keyboard_dispose]: keyboards#km_core_keyboard_dispose "km_core_keyboard_dispose function"
[km_core_keyboard_get_attrs]: keyboards#km_core_keyboard_get_attrs "km_core_keyboard_get_attrs function"
[km_core_keyboard_get_key_list]: keyboards#km_core_keyboard_get_key_list "km_core_keyboard_get_key_list function"
[km_core_keyboard_key_list_dispose]: keyboards#km_core_keyboard_key_list_dispose "km_core_keyboard_key_list_dispose function"
[km_core_keyboard_imx_list_dispose]: keyboards#km_core_keyboard_imx_list_dispose "km_core_keyboard_imx_list_dispose function"
[km_core_state_imx_register_callback]: keyboards#km_core_state_imx_register_callback "km_core_state_imx_register_callback function"
[km_core_state_imx_deregister_callback]: keyboards#km_core_state_imx_deregister_callback "km_core_state_imx_deregister_callback function"
[km_core_state_create]: keyboards#km_core_state_create "km_core_state_create function"
[km_core_state_clone]: keyboards#km_core_state_clone "km_core_state_clone function"
[km_core_state_dispose]: keyboards#km_core_state_dispose "km_core_state_dispose function"
[km_core_debug_context_type]: keyboards#km_core_debug_context_type "km_core_debug_context_type enum"
[km_core_state_context_debug]: keyboards#km_core_state_context_debug "km_core_state_context_debug function"
[km_core_cu_dispose]: keyboards#km_core_cu_dispose "km_core_cu_dispose function"
[km_core_event_flags]: processor#km_core_event_flags "km_core_event_flags enum"
[km_core_process_event]: processor#km_core_process_event "km_core_process_event function"
[km_core_event]: processor#km_core_event "km_core_event function"
[km_core_event_code]: processor#km_core_event_code "km_core_event_code enum"