4.4.1.12 LayerAtIndex

Prototype:

property LayerAtIndex [index: integer]: TFieldMapLayerWrapper; (READ-ONLY)

Description:

The LayerAtIndex property returns an object wrapper for the Field-Map layer at a specified index from the range <0..LayerCount-1> or nill if the index is not valid. Layer indexes cannot be mistaken for layer IDs. They are not fixed numbers. For example, when a layer is disabled in Field-Map Project Manager, it is made inaccessible for the Field-MapLayerWrapper and does not fall into the range of indexes. In this situation, all the layers with a higher index are re-indexed.

Syntax:

variable := Project.LayerAtIndex[LayerIndex];

Part

Description

variable

A variable declared as an instance of the TFieldMapLayerWrapper class

Project

A reference to the Field-Map project as defined in Field-Map Project Manager

LayerIndex

The Field-Map layer index

Return value:

an object wrapper for the Field-Map layer at a specified index from the range <0..LayerCount-1> or nil if the index is not valid