ART Polyline mark.

Members:

IG_ARTX_polyline_bounds_get	Queries the bounding rectangle.
IG_ARTX_polyline_closed_get	Checks whether the polyline is closed.
IG_ARTX_polyline_closed_set	Updates the polyline closed attribute.
IG_ARTX_polyline_create	Creates polyline mark.
IG_ARTX_polyline_endhead_get	Queries the end head of the annotation.
IG_ARTX_polyline_endhead_set	Updates the end head of the annotation.
IG_ARTX_polyline_headfillcolor_get	Queries head fill color of the annotation.
IG_ARTX_polyline_headfillcolor_set	Updates the annotation head fill color.
IG_ARTX_polyline_line_get	Queries the annotation line attributes.
IG_ARTX_polyline_line_set	Updates the annotation line attributes.
IG_ARTX_polyline_opacity_get	Queries the value of annotation opacity.
IG_ARTX_polyline_opacity_set	Updates the value of annotation opacity.
IG_ARTX_polyline_point_count_get	Gets the number of polyline points.
IG_ARTX_polyline_points_get	Gets the polyline points.
IG_ARTX_polyline_points_set	Sets the polyline points.
IG_ARTX_polyline_starthead_get	Queries the start head of the annotation.
IG_ARTX_polyline_starthead_set	Updates the start head of the annotation.