protected override void OnMouseDown(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg) { if (arg.Button == MouseButtons.Left) { GeographicCoordinates geographicCoordinates = new GeographicCoordinates(ArcGlobe.Globe, arg.X, arg.Y); SpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceFactory((int)GeographicCoordinateSystem); PointGeometry pointGeometry = new PointGeometry(geographicCoordinates.Longitude, geographicCoordinates.Latitude, geographicCoordinates.AltitudeInKilometers, spatialReferenceFactory.SpatialReference); TextForm textForm = new TextForm(); DialogResult dialogResult = textForm.ShowDialog(); if (textForm.InputText.Length > 0) { TextElement textElement = new TextElement(pointGeometry.Geometry, textForm.InputText, TextElementSize); TableOfContents tableOfContents = new TableOfContents(ArcGlobe.Globe); if (!tableOfContents.LayerExists(GraphicsLayerName)) { tableOfContents.ConstructLayer(GraphicsLayerName); } Layer layer = new Layer(tableOfContents[GraphicsLayerName]); layer.AddElement(textElement.Element, textElement.ElementProperties); ArcGlobe.Globe.GlobeDisplay.RefreshViewers(); } } }