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xcb_glx_read_pixels(3) XCB Requests xcb_glx_read_pixels(3)

NAME

xcb_glx_read_pixels -

SYNOPSIS

#include <xcb/glx.h>

Request function

xcb_glx_read_pixels_cookie_t xcb_glx_read_pixels(xcb_connection_t *conn, xcb_glx_context_tag_t context_tag, int32_t x, int32_t y, int32_t width, int32_t height, uint32_t format, uint32_t type, uint8_t swap_bytes, uint8_t lsb_first);

Reply datastructure

typedef struct xcb_glx_read_pixels_reply_t {


    uint8_t  response_type;


    uint8_t  pad0;


    uint16_t sequence;


    uint32_t length;


    uint8_t  pad1[24];
} xcb_glx_read_pixels_reply_t;

Reply function

xcb_glx_read_pixels_reply_t *xcb_glx_read_pixels_reply(xcb_connection_t *conn, xcb_glx_read_pixels_cookie_t cookie, xcb_generic_error_t **e);

Reply accessors

uint8_t *xcb_glx_read_pixels_data(const xcb_glx_read_pixels_request_t *reply);

int xcb_glx_read_pixels_data_length(const xcb_glx_read_pixels_reply_t *reply);

xcb_generic_iterator_t xcb_glx_read_pixels_data_end(const xcb_glx_read_pixels_reply_t *reply);

REQUEST ARGUMENTS

The XCB connection to X11.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.

REPLY FIELDS

The type of this reply, in this case XCB_GLX_READ_PIXELS. This field is also present in the xcb_generic_reply_t and can be used to tell replies apart from each other.
The sequence number of the last request processed by the X11 server.
The length of the reply, in words (a word is 4 bytes).

DESCRIPTION

RETURN VALUE

Returns an xcb_glx_read_pixels_cookie_t. Errors have to be handled when calling the reply function xcb_glx_read_pixels_reply.

If you want to handle errors in the event loop instead, use xcb_glx_read_pixels_unchecked. See xcb-requests(3) for details.

ERRORS

This request does never generate any errors.

SEE ALSO

AUTHOR

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

libxcb 1.13 X Version 11