Lookup objects

You can use lookup objects for many of the same purposes as combo boxes. Lookup objects are particularly useful when used with a Select Element action. You can also use a lookup as an alternative to creating actions in cells.

See Action types.

This table shows the advantages of using a lookup object instead of a combo box, and some disadvantages:


Advantages of lookup	Disadvantages of lookup
Supports selection of multiple elements
Faster than a combo box in cases where, for example, the displayed list has a large number of elements in a flat structure
Works inside hyperblocks
	Not a list object. The object does not contain the list that it references.
	Does not react to Selection Changed event. See Action modes.

The advantage of lookup objects over actions in cells is that the size of a lookup is not influenced by the adjacent rows, columns, and hyperblocks. This is particularly useful in complex report layouts.

In some cases you might find it useful to convert existing combo boxes to lookups.