cairo_line_cap_t 3 cairo_line_cap_t enumeration for style of line-endings enums cairo_line_cap_t typedef enum cairo_line_cap { CAIRO_LINE_CAP_BUTT, CAIRO_LINE_CAP_ROUND, CAIRO_LINE_CAP_SQUARE } cairo_line_cap_t; CAIRO_LINE_CAP_BUTT start(stop) the line exactly at the start(end) point CAIRO_LINE_CAP_ROUND use a round ending, the center of the circle is the end point. CAIRO_LINE_CAP_SQUARE use squared ending, the center of the square is the end point.