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.Format32bppArgb);
    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.