xcb_poly_segment_checked(3)

1xcb_poly_segment(3)              XCB Requests              xcb_poly_segment(3)
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NAME

6       xcb_poly_segment - draw lines
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SYNOPSIS

9       #include <xcb/xproto.h>
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11   Request function
12       xcb_void_cookie_t xcb_poly_segment(xcb_connection_t *conn,
13              xcb_drawable_t drawable, xcb_gcontext_t gc,
14              uint32_t segments_len, const xcb_segment_t *segments);
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REQUEST ARGUMENTS

17       conn      The XCB connection to X11.
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19       drawable  A drawable (Window or Pixmap) to draw on.
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21       gc        The graphics context to use.
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23                 TODO: document which attributes of a gc are used
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25       segments_len
26                 The number of xcb_segment_t structures in segments.
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28       segments  An array of xcb_segment_t structures.
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DESCRIPTION

31       Draws multiple, unconnected lines. For each segment, a line is drawn
32       between (x1, y1) and (x2, y2). The lines are drawn in the order listed
33       in the array of xcb_segment_t structures and does not perform joining
34       at coincident endpoints. For any given line, a pixel is not drawn more
35       than once. If lines intersect, the intersecting pixels are drawn multi‐
36       ple times.
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38       TODO: include the xcb_segment_t data structure
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40       TODO: an example
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RETURN VALUE

43       Returns an xcb_void_cookie_t. Errors (if any) have to be handled in the
44       event loop.
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46       If you want to handle errors directly with xcb_request_check instead,
47       use xcb_poly_segment_checked. See xcb-requests(3) for details.
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ERRORS

50       xcb_drawable_error_t
51                 The specified drawable does not exist.
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53       xcb_g_context_error_t
54                 The specified gc does not exist.
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56       xcb_match_error_t
57                 TODO: reasons?
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AUTHOR

63       Generated from xproto.xml. Contact xcb@lists.freedesktop.org for cor‐
64       rections and improvements.
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68X Version 11                      libxcb 1.13              xcb_poly_segment(3)