This enumeration indicates the position of the mouse cursor relative to a mark selection rectangle.
| IG_ARTX_BOUND_NONE | Specifies that point is not on the selection rectangle. |
| IG_ARTX_BOUND_LEFT_TOP | Specifies that point is on left-top corner of selection rectangle. |
| IG_ARTX_BOUND_RIGHT_TOP | Specifies that point is on right-top corner of selection rectangle. |
| IG_ARTX_BOUND_LEFT_BOTTOM | Specifies that point is on left-bottom corner of selection rectangle. |
| IG_ARTX_BOUND_RIGHT_BOTTOM | Specifies that point is on right-bottom corner of selection rectangle. |
| IG_ARTX_BOUND_LEFT | Specifies that point is on left side of selection rectangle. |
| IG_ARTX_BOUND_RIGHT | Specifies that point is on right side of selection rectangle. |
| IG_ARTX_BOUND_TOP | Specifies that point is on top side of selection rectangle. |
| IG_ARTX_BOUND_BOTTOM | Specifies that point is on bottom side of selection rectangle. |