IMapVisualNumericProperty.Value

Syntax

Value: Double;

Description

The Value property determines a parameter value.

Example

Executing the example requires a form with the following components: the Button component named Button1, the MapBox component named MapBox1, and the UiMap component named UiMap1. UiMap1 is a data source for MapBox1. A map should be connected to the UiMap1 component. The VisualDataAdapter class that creates a dynamic data source should also be implemented. The class example is contained in the IMapVisual.DataAdapter property description.

The example is a handler of the OnClick event for the Button1 component.

Add links to the Drawing, ExtCtrls, Forms, and Map system assemblies.

Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);
Var
    Map: IMap;
    Layer: IMapLayer;
    BarVisual: IMapBarVisual;
    Height: IMapVisualNumericProperty;
Begin
    Map := UiMap1.Map;
    Layer := Map.Layers.FindByName("Regions");
    BarVisual := Layer.Visuals.AddBarVisual;
    BarVisual.DataAdapter := New VisualDataAdapter.Create As IMapDynamicDataAdapter;
    Height := BarVisual.Height;
    Height.Dependent := False;
    Height.Value := 5;
End Sub Button1OnClick;

After executing the example the bar indicator, which maximum height is to be set, is added to the Regions layer.