IMapLegend.Draw

Syntax

Draw(Graphics: IGxGraphics; Rect: IGxRectF);

Parameters

Graphics. Graphic context for rendering.

Rect. Real rectangle where a legend is rendered.

Description

The Draw method draws a legend in the specified rectangle.

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 UiMap1 component must have a connected map that contains a map factor only. The ImageBox component named ImageBox1 must also be available.

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

Var

Map: IMap;

Layer: IMapLayer;

Legend: IMapLegend;

BitMap: IGxBitmap;

Graphics: IGxGraphics;

Rect: IGxRectF;

Begin

Map := UiMap1.Map;

Legend := New DxMapLegend.Create As IMapLegend;

Map.View.Legend := Legend;

Legend.Visible := True;

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

Legend.Visual := Layer.Visuals.Item(0);

BitMap := GxBitmap.CreateNew(ImageBox1.ClientWidth, ImageBox1.ClientHeight, GxPixelFormat.Unknown);

Graphics := GxGraphicsClass.FromImage(BitMap);

Rect := New GxRectF.Create(0, 0, ImageBox1.Width, ImageBox1.Height);

Legend.Draw(Graphics, Rect);

ImageBox1.Image := BitMap;

End Sub Button1OnClick;

After executing the example the ImageBox1 component stores a drawn map legend.