private void inlineSimpleSymbolToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var res = (ILayerDefinition)_edSvc.GetEditedResource();
            var vl  = (IVectorLayerDefinition)res.SubLayer;

            if (vl.SymbolDefinitionVersion == null)
            {
                throw new InvalidOperationException(Strings.ErrorLayerDefnitionDoesNotSupportCompositeSymbolization);
            }
            var ssym = ObjectFactory.CreateSimpleSymbol(vl.SymbolDefinitionVersion,
                                                        "InlineSimpleSymbol", //NOXLATE
                                                        Strings.TextInlineSimpleSymbol);

            var instance = _comp.CreateInlineSimpleSymbol(ssym);

            AddInstance(instance, true);
        }