AutoCAD FAQ

The default action for AutoCAD is to ignore hatch objects, as doing so improves performance. The ability for AutoCAD to snap to a hatch object is controlled by one of two variables and their settings.

Variable 1

From release 2005 through to release 2006, that variable is OSNAPHATCH.

This variable controls whether object snaps ignore hatch objects.

The settings are:

0 - Object snaps ignore hatch objects.

Variable 2

From release 2007 through to release 2008 the variable OSNAPHATCH was replaced by the variable OSOPTIONS.

This variable affects object snaps on hatch objects as well as object snaps on geometry with negative Z values when using a dynamic UCS.

The settings are:

0 - Object snaps operate on hatch objects, and on geometry with negative Z values when using a dynamic UCS.
1 - Object snaps ignore hatch objects.
2 - Object snaps ignore geometry with negative Z values during use of a dynamic UCS.
3 - (1 + 2) - Object snaps ignore hatch objects as well as geometry with negative Z values during use of a dynamic UCS.

The OSOPTIONS variable can also be set in the ToolsOptionsDrafting tab under "Ignore hatch objects" :

Ticked      = OSOPTIONS set to 3
Not ticked = OSOPTIONS set to 2