Is it possible to have a GeometryFilter that excludes one type rather than having to list all types you want to keep?
the Objecttypes is a bit - Pattern - you should be able to do something like
(A)
var myTypes = ObjectType.Anyobject - ObjectType.Point;
(not tested)
(B)
if the minus does not work, you might need
var myTypes = ObjectType.AnyObject ^ ObjectType.Point;
to combine the enums.
please comment if A or B worked for you.
hope that helps or points in the right direction - best -tom