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xcb_get_image

Section: XCB Requests (3)
Updated: libxcb 1.12
Index Return to Main Contents
 

NAME

xcb_get_image -  

SYNOPSIS

#include <xcb/xproto.h>  

Request function

xcb_get_image_cookie_t xcb_get_image(xcb_connection_t *conn, uint8_t format, xcb_drawable_t drawable, int16_t x, int16_t y, uint16_t width, uint16_t height, uint32_t plane_mask);

 

Reply datastructure


typedef struct xcb_get_image_reply_t {
    uint8_t        response_type;
    uint8_t        depth;
    uint16_t       sequence;
    uint32_t       length;
    xcb_visualid_t visual;
    uint8_t        pad0[20];
} xcb_get_image_reply_t;
 

Reply function

xcb_get_image_reply_t *xcb_get_image_reply(xcb_connection_t *conn, xcb_get_image_cookie_t cookie, xcb_generic_error_t **e);
 

Reply accessors

uint8_t *xcb_get_image_data(const xcb_get_image_request_t *reply);
int xcb_get_image_data_length(const xcb_get_image_reply_t *reply);
xcb_generic_iterator_t xcb_get_image_data_end(const xcb_get_image_reply_t *reply);
 

REQUEST ARGUMENTS

conn
The XCB connection to X11.
format
One of the following values:
XCB_IMAGE_FORMAT_XY_BITMAP
TODO: NOT YET DOCUMENTED.
XCB_IMAGE_FORMAT_XY_PIXMAP
TODO: NOT YET DOCUMENTED.
XCB_IMAGE_FORMAT_Z_PIXMAP
TODO: NOT YET DOCUMENTED.
TODO: NOT YET DOCUMENTED.
drawable
TODO: NOT YET DOCUMENTED.
x
TODO: NOT YET DOCUMENTED.
y
TODO: NOT YET DOCUMENTED.
width
TODO: NOT YET DOCUMENTED.
height
TODO: NOT YET DOCUMENTED.
plane_mask
TODO: NOT YET DOCUMENTED.
 

REPLY FIELDS

response_type
The type of this reply, in this case XCB_GET_IMAGE. 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).
depth
TODO: NOT YET DOCUMENTED.
visual
TODO: NOT YET DOCUMENTED.
 

DESCRIPTION

 

RETURN VALUE

Returns an xcb_get_image_cookie_t. Errors have to be handled when calling the reply function xcb_get_image_reply.

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

ERRORS

This request does never generate any errors.  

SEE ALSO

 

AUTHOR

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


 

Index

NAME
SYNOPSIS
Request function
Reply datastructure
Reply function
Reply accessors
REQUEST ARGUMENTS
REPLY FIELDS
DESCRIPTION
RETURN VALUE
ERRORS
SEE ALSO
AUTHOR


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