ART Ruler mark.

Members:

IG_ARTX_ruler_aspectratio_get	Queries attributes ruler aspect ratio.
IG_ARTX_ruler_aspectratio_set	Updates attributes of ruler aspect ratio.
IG_ARTX_ruler_bounds_get	Queries the bounding rectangle of annotation.
IG_ARTX_ruler_create	Creates a new instance of ruler annotation (HIG_ARTX_MARK_RULER).
IG_ARTX_ruler_endline_length_get	Queries the length of ruler end point touch.
IG_ARTX_ruler_endline_length_set	Updates the length of ruler end point touch.
IG_ARTX_ruler_endpoint_get	Queries ruler end point.
IG_ARTX_ruler_endpoint_set	Updates ruler end point position.
IG_ARTX_ruler_font_get	Queries button text font.
IG_ARTX_ruler_font_set	Updates annotation font.
IG_ARTX_ruler_label_get	Queries annotation label string.
IG_ARTX_ruler_label_set	Updates annotation label.
IG_ARTX_ruler_line_get	Queries attributes of line used to draw the annotation.
IG_ARTX_ruler_line_set	Sets attributes of line used to draw the annotation.
IG_ARTX_ruler_logfont_get	Queries annotation text font.
IG_ARTX_ruler_logfont_set	Updates button text font.
IG_ARTX_ruler_opacity_get	Queries the opacity value of annotation.
IG_ARTX_ruler_opacity_set	Sets the opacity value of annotation.
IG_ARTX_ruler_precision_get	Queries the precision of ruler length displayed.
IG_ARTX_ruler_precision_set	Updates the precision of ruler length displayed.
IG_ARTX_ruler_startline_length_get	Queries the length of ruler start point touch.
IG_ARTX_ruler_startline_length_set	Updates the length of ruler start point touch.
IG_ARTX_ruler_startpoint_get	Queries ruler start point.
IG_ARTX_ruler_startpoint_set	Updates ruler start point position.