TdxMapLayer Class

A generic map layer.

Declaration

TdxMapLayer = class(
    TcxComponentCollectionItem
)

Remarks

TdxMapLayer is the base class for classes implementing map layers – be it built-in map layers (TdxMapImageTileLayer, TdxMapItemFileLayer, or TdxMapItemLayer) or custom ones. TdxMapLayer implements the essential functionality that is common to all these map layers, allowing you to do the following:

• Switch the map layer’s visibility and determine if the layer is rendered on a map (Visible and IsActuallyVisible);

• Convert map layer points to various units (GeoPointToMapUnit, GeoPointToScreenPoint, MapUnitToScreenPoint, ScreenPointToGeoPoint, and ScreenPointToMapUnit).

To manage map layers in a map control, use its Layers collection.

Inheritance

TObject

TPersistent

TComponent

TcxCustomComponent

TcxComponentCollectionItem

TdxMapLayer