This enumeration identifies attributes of ruler annotations.
Values:
| IG_ARTX_ATTR_RULER_BOUNDS | Identifies annotation bounding rectangle. This is read-only property. |
| IG_ARTX_ATTR_RULER_OPACITY | Identifies annotation opacity. |
| IG_ARTX_ATTR_RULER_LINE | Identifies attributes of line used to draw annotation. |
| IG_ARTX_ATTR_RULER_ASPECTRATIO | Identifies attributes of annotation aspect ratio. |
| IG_ARTX_ATTR_RULER_STARTPOINT | Identifies start point of ruler. |
| IG_ARTX_ATTR_RULER_ENDPOINT | Identifies end point of ruler. |
| IG_ARTX_ATTR_RULER_STARTLINE_LENGTH | Identifies length of touch at start point of ruler. |
| IG_ARTX_ATTR_RULER_ENDLINE_LENGTH | Identifies length of touch at end point of ruler. |
| IG_ARTX_ATTR_RULER_PRECISION | Identifies precision of ruler length displayed. |
| IG_ARTX_ATTR_RULER_LABEL | Identifies text used for ruler label. |
| IG_ARTX_ATTR_RULER_FONT | Identifies attributes of annotation font. Font is specified as AT_ARTX_FONT structure. |
| IG_ARTX_ATTR_RULER_LOGFONT | Identifies attributes of annotation font. Font is specified as AT_LOGFONT structure. |
| IG_ARTX_ATTR_RULER_HITTEST_BOUNDS | This value has been deprecated and will be removed from the public API in a future release. |