The xkbcommon-x11 library uses various XKB requests. Before doing so,
an X client must notify the server that it will be using the extension.
This function (or an XCB equivalent) must be called before any other
function in this library is used.
Some X servers may not support or disable the XKB extension. If you
want to support such servers, you need to use a different fallback.
You may call this function several times; it is idempotent.
@param connection
An XCB connection to the X server.
@param major_xkb_version
See @p minor_xkb_version.
@param minor_xkb_version
The XKB extension version to request. To operate correctly, you
must have (major_xkb_version, minor_xkb_version) >=
(XKB_X11_MIN_MAJOR_XKB_VERSION, XKB_X11_MIN_MINOR_XKB_VERSION),
though this is not enforced.
@param flags
Optional flags, or 0.
@paramout major_xkb_version_out
See @p minor_xkb_version_out.
@paramout minor_xkb_version_out
Backfilled with the compatible XKB extension version numbers picked
by the server. Can be NULL.
@paramout base_event_out
Backfilled with the XKB base (also known as first) event code, needed
to distinguish XKB events. Can be NULL.
@paramout base_error_out
Backfilled with the XKB base (also known as first) error code, needed
to distinguish XKB errors. Can be NULL.
Setup the XKB X11 extension for this X client.
The xkbcommon-x11 library uses various XKB requests. Before doing so, an X client must notify the server that it will be using the extension. This function (or an XCB equivalent) must be called before any other function in this library is used.
Some X servers may not support or disable the XKB extension. If you want to support such servers, you need to use a different fallback.
You may call this function several times; it is idempotent.
@param connection An XCB connection to the X server. @param major_xkb_version See @p minor_xkb_version. @param minor_xkb_version The XKB extension version to request. To operate correctly, you must have (major_xkb_version, minor_xkb_version) >= (XKB_X11_MIN_MAJOR_XKB_VERSION, XKB_X11_MIN_MINOR_XKB_VERSION), though this is not enforced. @param flags Optional flags, or 0. @paramout major_xkb_version_out See @p minor_xkb_version_out. @paramout minor_xkb_version_out Backfilled with the compatible XKB extension version numbers picked by the server. Can be NULL. @paramout base_event_out Backfilled with the XKB base (also known as first) event code, needed to distinguish XKB events. Can be NULL. @paramout base_error_out Backfilled with the XKB base (also known as first) error code, needed to distinguish XKB errors. Can be NULL.
@returns 1 on success, or 0 on failure.