IMapVisualIconProperty.Dependent

Syntax

Dependent: Boolean;

Description

The Dependent property determines whether a factor scale is used:

True. The scale determined by the IMapVisualIconProperty.Scale property is used, value of the IMapVisualIconProperty.Value property is ignored.
False. The icon determined in the IMapVisualIconProperty.Value property is used, value of the IMapVisualIconProperty.Scale property is ignored.

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:\blue.gif" file, that contains the image, must be present in the file system.

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

Var

Map: IMap;

Layer: IMapLayer;

ImageVisual: IMapImageVisual;

Image: IGxImage;

ImageProp: IMapVisualIconProperty;

Begin

Map := UiMap1.Map;

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

ImageVisual := Layer.Visuals.AddImageVisual;

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

ImageProp := ImageVisual.Image;

ImageProp.Dependent := False;

Image := GxImage.FromFile("C:\blue.gif");

ImageProp.Value := Image;

ImageProp.DataAdapter := ImageVisual.DataAdapter;

ImageVisual.Height.Value := 4;

ImageVisual.Width.Value := 4;

End Sub Button1OnClick;

After executing the example the icon factor, that is 4 pixels long and wide, is added to the Regions layer. The factor icon is loaded from the C:\blue.gif file.The data source, that determines the construction, matches with the factor data source.