xcb_query_font(3)

NAME
xcb_query_font - query font metrics

SYNOPSIS
#include <xcb/xproto.h>

  Request function

xcb_query_font_cookie_t xcb_query_font(xcb_connection_t *conn, xcb_fontable_t font);

  Reply datastructure

typedef struct xcb_query_font_reply_t {
    uint8_t        response_type;
    uint8_t        pad0;
    uint16_t       sequence;
    uint32_t       length;
    xcb_charinfo_t min_bounds;
    uint8_t        pad1[4];
    xcb_charinfo_t max_bounds;
    uint8_t        pad2[4];
    uint16_t       min_char_or_byte2;
    uint16_t       max_char_or_byte2;
    uint16_t       default_char;
    uint16_t       properties_len;
    uint8_t        draw_direction;
    uint8_t        min_byte1;
    uint8_t        max_byte1;
    uint8_t        all_chars_exist;
    int16_t        font_ascent;
    int16_t        font_descent;
    uint32_t       char_infos_len;
} xcb_query_font_reply_t;

  Reply function

xcb_query_font_reply_t *xcb_query_font_reply(xcb_connection_t *conn, xcb_query_font_cookie_t cookie, xcb_generic_error_t **e);

  Reply accessors

xcb_fontprop_t *xcb_query_font_properties(const xcb_query_font_request_t *reply);

int xcb_query_font_properties_length(const xcb_query_font_reply_t *reply);

xcb_fontprop_iterator_t xcb_query_font_properties_iterator(const xcb_query_font_reply_t *reply);

xcb_charinfo_t *xcb_query_font_char_infos(const xcb_query_font_request_t *reply);

int xcb_query_font_char_infos_length(const xcb_query_font_reply_t *reply);

xcb_charinfo_iterator_t xcb_query_font_char_infos_iterator(const xcb_query_font_reply_t *reply);

REQUEST ARGUMENTS

conn
    The XCB connection to X11.

font
    The fontable (Font or Graphics Context) to query.

REPLY FIELDS

response_type
    The type of this reply, in this case XCB_QUERY_FONT. This field is also present in the xcb_generic_reply_t and can be used to tell replies apart from each other.

sequence
    The sequence number of the last request processed by the X11 server.

length
    The length of the reply, in words (a word is 4 bytes).

min_bounds
    minimum bounds over all existing char

max_bounds
    maximum bounds over all existing char

min_char_or_byte2
    first character

max_char_or_byte2
    last character

default_char
    char to print for undefined character

properties_len
    how many properties there are

draw_direction
    One of the following values:

    XCB_FONT_DRAW_LEFT_TO_RIGHT
        TODO: NOT YET DOCUMENTED.

    XCB_FONT_DRAW_RIGHT_TO_LEFT
        TODO: NOT YET DOCUMENTED.

min_byte1
    TODO: NOT YET DOCUMENTED.

max_byte1
    TODO: NOT YET DOCUMENTED.

all_chars_exist
    flag if all characters have nonzero size

font_ascent
    baseline to top edge of raster

font_descent
    baseline to bottom edge of raster

char_infos_len
    TODO: NOT YET DOCUMENTED.

DESCRIPTION
Queries information associated with the font.

RETURN VALUE
Returns an xcb_query_font_cookie_t. Errors have to be handled when calling the reply function xcb_query_font_reply. If you want to handle errors in the event loop instead, use xcb_query_font_unchecked. See xcb-requests(3) for details.

ERRORS
This request does never generate any errors.

SEE ALSO
xcb-requests(3)

AUTHOR
Generated from xproto.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.