xcb_open_font man page
xcb_open_font — opens a font
xcb_void_cookie_t xcb_open_font(xcb_connection_t *conn, xcb_font_t fid, uint16_t name_len, const char *name);
The XCB connection to X11.
The ID with which you will refer to the font, created by xcb_generate_id.
Length (in bytes) of name.
A pattern describing an X core font.
Opens any X core font matching the given name (for example "-misc-fixed-*").
Note that X core fonts are deprecated (but still supported) in favor of client-side rendering using Xft.
Returns an xcb_void_cookie_t. Errors (if any) have to be handled in the event loop.
If you want to handle errors directly with xcb_request_check instead, use xcb_open_font_checked. See xcb-requests(3) for details.
No font matches the given name.
Generated from xproto.xml. Contact firstname.lastname@example.org for corrections and improvements.
xcb_open_font_checked(3) is an alias of xcb_open_font(3).