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NAME
SYNOPSIS
REQUEST ARGUMENTS
REPLY FIELDS
DESCRIPTION
RETURN VALUE
ERRORS
SEE ALSO
AUTHOR
xcb_glx_read_pixels −
#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); |
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); |
conn |
The XCB connection to X11. |
context_tag
TODO: NOT YET DOCUMENTED.
x |
TODO: NOT YET DOCUMENTED. |
|||
y |
TODO: NOT YET DOCUMENTED. |
|||
width |
TODO: NOT YET DOCUMENTED. |
|||
height |
TODO: NOT YET DOCUMENTED. |
|||
format |
TODO: NOT YET DOCUMENTED. |
|||
type |
TODO: NOT YET DOCUMENTED. |
swap_bytes
TODO: NOT YET DOCUMENTED.
lsb_first |
TODO: NOT YET DOCUMENTED. |
response_type
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.
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). |
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.
This request does never generate any errors.
Generated from glx.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.