EasyMap VCL
TLayersComboBox.CurrentLayer
property CurrentLayer: TMapLayer;
Description
Currently selected layer.

Code below allows you to show data from selected in TLayersComboBox layer into TDataBrowser component.

procedure TForm1.LayersComboBox1Change(Sender: TObject);
begin
 DataBrowser1.Layer := LayersComboBox1.CurrentLayer;
 LayersComboBox1.CurrentLayer.Zoom();
end;