Struct xcb::x::QueryExtension

pub struct QueryExtension<'a> {
    pub name: &'a [u8],
}

check if extension is present

Determines if the specified extension is present on this X11 server.

Every extension has a unique major_opcode to identify requests, the minor opcodes and request formats are extension-specific. If the extension provides events and errors, the first_event and first_error fields in the reply are set accordingly.

There should rarely be a need to use this request directly, the extensions can be activated with Connection::connect_with_extensions.

This request replies QueryExtensionReply.

Associated cookie types are QueryExtensionCookie and QueryExtensionCookieUnchecked.

Fields

name: &'a [u8]

The name of the extension to query, for example “RANDR”. This is case sensitive!

Trait Implementations

impl<'a> Clone for QueryExtension<'a>

fn clone(&self) -> QueryExtension<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for QueryExtension<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> RawRequest for QueryExtension<'a>

fn raw_request(&self, c: &Connection, checked: bool) -> u64

Actual implementation of the request sending

impl<'a> Request for QueryExtension<'a>

type Cookie = QueryExtensionCookie

The default cookie associated to this request.

const IS_VOID: bool = false

false if the request returns a reply, true otherwise.

impl<'a> RequestWithReply for QueryExtension<'a>

type Reply = QueryExtensionReply

Reply associated with the request

type Cookie = QueryExtensionCookie

Default cookie type for the request, as returned by Connection::send_request.

type CookieUnchecked = QueryExtensionCookieUnchecked

Unchecked cookie type for the request, as returned by Connection::send_request_unchecked.