IMap.BeginUpdate

Syntax

BeginUpdate;

Description

The BeginUpdate method stops map rendering. The rendering can be resumed by calling the IMap.EndUpdate method.

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.

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

Var

Map: IMap;

TerritoryInfo: IMapTerritoryInfo;

MapView: IMapView;

MapLayers: IMapLayers;

Begin

Map := UiMap1.Map;

MapView := Map.View;

Map.BeginUpdate;

TerritoryInfo := New DxMapTerritoryInfo.Create;

MapLayers := Map.Layers;

TerritoryInfo.Layer := MapLayers.FindByName("Regions");

MapView.TerritoryInfo := TerritoryInfo;

Map.EndUpdate;

End Sub Button1OnClick;

After executing the example the territory info of the Regions layer is displayed for the map. Map rendering is stopped to display the territory info.