Visible: Boolean;
The Visible property determines legend visibility.
Available values:
True . The legend is displayed.
False. The legend is not displayed.
Executing the example requires a form, a button named Button1 on the form, the UiMap component named UiMap1 that is a data source for the MapBox component. The UiMap1 component must have a connected map that contains a map indicator only.
Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);
Var
Map: IMap;
Layer: IMapLayer;
Legend: IMapLegend;
Begin
Map := UiMap1.Map;
Legend := New DxMapLegend.Create As IMapLegend;
Map.View.Legend := Legend;
Legend.Visible := True;
Legend.BeginUpdate;
Layer := Map.Layers.FindByName("Regions");
Legend.Visual := Layer.Visuals.Item(0);
Legend.NoDataElementFirst := True;
Legend.NoDataElementVisible := True;
Legend.EndUpdate;
End Sub Button1OnClick;
After executing the example the legend containing the No Data element on the first position is displayed for the map indicator:
See also: