IMapLayerVisuals.AddImageVisual

Syntax

Description

The AddImageVisual method adds an icon factor to the collection.

Example

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 map must be connected to the UiMap1 component. The VisualDataAdapter class, that creates a dynamic data source, must also be implemented. The class example is contained in the IMapVisual.DataAdapter property description. The C:\Icons.gif file, that contains icons for the scale, must be present in the file system.

Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);

Var

Map: IMap;

Layer: IMapLayer;

ImageVisual: IMapImageVisual;

ImageProp: IMapVisualIconProperty;

Scale: IMapIconScale;

Begin

Map := UiMap1.Map;

Layer := Map.Layers.FindByName("Regions");

ImageVisual := Layer.Visuals.AddImageVisual;

ImageVisual.DataAdapter := New VisualDataAdapter.Create As IMapDynamicDataAdapter;

ImageProp := ImageVisual.Image;

ImageProp.DataAdapter := ImageVisual.DataAdapter;

ImageVisual.Height.Value := 2;

ImageVisual.Width.Value := 2;

ImageProp.Dependent := True;

Scale := ImageProp.Scale;

Scale.AutoSetup(Layer, ImageVisual.DataAdapter, GxImage.FromFile("C:\Icons.gif"), 2, 1, 2);

End Sub Button1OnClick;

After executing the example the icon factor is added to the Regions layer. The factor scale is set automatically:

The icons are obtained from the "C:\Icons.gif" file: .