xcb_glx_query_context(3)

📦
version 1.17.0 · 4 versions
, in alpine 3.22, alpine 3.23, alpine 3.24, arch rolling, centos-stream 10, debian trixie, fedora 43, fedora 44, nixpkgs unstable, opensuse-leap 16.0, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 xcb_glx_query_context 💖

okay bestie, welcome to the xcb_glx_query_context page from the XCB Requests fam — this is the part of the libxcb manual where we ask the X server "hey girl, what's up with this GLX context?" ✨

🌸 NAME 🌸

xcb_glx_query_context —

yes the NAME section is literally just vibes and a dash, the original said nothing more and I'm not about to make stuff up 💅

✨ SYNOPSIS ✨

First things first, you gotta bring in the header:

#include <xcb/glx.h>

🎀 Request function

xcb_glx_query_context_cookie_t
       xcb_glx_query_context(xcb_connection_t *conn,
       xcb_glx_context_t context);

🎀 Reply datastructure

typedef struct xcb_glx_query_context_reply_t {
    uint8_t  response_type;
    uint8_t  pad0;
    uint16_t sequence;
    uint32_t length;
    uint32_t num_attribs;
    uint8_t  pad1[20];
} xcb_glx_query_context_reply_t;

🎀 Reply function

xcb_glx_query_context_reply_t
       *xcb_glx_query_context_reply(xcb_connection_t *conn,
       xcb_glx_query_context_cookie_t cookie, xcb_generic_error_t **e);

🎀 Reply accessors

uint32_t *xcb_glx_query_context_attribs(const
       xcb_glx_query_context_request_t *reply);
int xcb_glx_query_context_attribs_length(const
       xcb_glx_query_context_reply_t *reply);
xcb_generic_iterator_t xcb_glx_query_context_attribs_end(const
       xcb_glx_query_context_reply_t *reply);

🦋 REQUEST ARGUMENTS 🦋

  • conn — the XCB connection to X11, aka your lil hotline to the server 📞
  • context — TODO: NOT YET DOCUMENTED. yeah babe, the docs simply did not show up to class that day 😭

🌈 REPLY FIELDS 🌈

  • response_type — the type of this reply, and in this case it's XCB_GLX_QUERY_CONTEXT. This field also lives in the xcb_generic_reply_t, so you can use it to tell your replies apart from each other, like name tags at a party 🎉
  • sequence — the sequence number of the last request processed by the X11 server. it's giving receipt energy 🧾
  • length — the length of the reply, in words. and bestie, a word is 4 bytes, don't forget it 💅
  • num_attribs — TODO: NOT YET DOCUMENTED. another mystery box, we love that for us 🙈

💜 DESCRIPTION 💜

okay so this section is literally empty in the original. nothing. a void. a blank space. the manpage said ✨nothing✨ and I'm respecting the canon 🫶

⭐ RETURN VALUE ⭐

It hands you back an xcb_glx_query_context_cookie_t. 🍪

Errors? You don't deal with those here, babe — you handle them when you call the reply function xcb_glx_query_context_reply.

And if you'd rather handle errors in the event loop instead, use xcb_glx_query_context_unchecked. See xcb-requests(3) for the deets. iykyk ✨

🔥 ERRORS 🔥

This request does never generate any errors. not a single one. she's unproblematic. she's the moment. periodt 👑

🌟 SEE ALSO 🌟

the SEE ALSO section is empty in the original, no references were given, no crumbs left behind 😭

🎀 AUTHOR 🎀

Generated from glx.xml. Contact xcb@lists.freedesktop.org for corrections and improvements. 💌

okay that's the whole page bestie!! this one's from X Version 11, shipping with libxcb 1.17.0 — go forth and query those contexts, you absolute icon 💅✨🦋🌸💖

📦 where this page comes from