How can I access pictures drawn by ControlsNewFreeHandToolClass?

SergioMunoz — Fri, 08 Jun 2012 11:56:35 GMT

Hello everyone,

I need to allow user to draw anything on the map. I have achieved this with the ControlsNewFreeHandToolClass, so when user click on the button and after that he clicks and drag, a new picture is drawn:

ICommand pCommand = new ControlsNewFreeHandToolClass();
pCommand.OnCreate(map.Object);
map.CurrentTool = pCommand as ITool;

The problem now is, how can I access the picture? I mean, what if I want to resize it, or remove it, or move it? It has to exist an object anywhere representing that picture... Actually, after drawing the picture, a square appears surrounding the picture, with eight points, as if I could drag and click on them...

[ATTACH=CONFIG]15059[/ATTACH]

Besides that, what if I want to change the line color, or size, before drawing? Is it possible?

Thank you very much in advance, the API is not very useful, at least in this case...

Re: How can I access pictures drawn by ControlsNewFreeHandToolClass?

SergioMunoz — Sat, 11 Dec 2021 19:37:15 GMT

Ok, I have achieved to access the object, but I still don't know how to modify it. The way to get the object is the following:

                List<IGraphicsContainer> graphicsContainers = GISUtil.layers.get_LayerSymbols_graphicContainerAll(ref map);
                graphicsContainers.Add(((IGraphicsContainer)(IActiveView)map.Map));
                for (int i = 0; i < graphicsContainers.Count; i++)
                {
                    graphicsContainers.Reset();
                    IElement element = graphicsContainers.Next();

                    while (element != null)
                    {
                        element = graphicsContainers.Next();
                    }
                }

        public List<IGraphicsContainer> get_LayerSymbols_graphicContainerAll(ref AxMapControl map) {

            List<IGraphicsContainer> result = new List<IGraphicsContainer>();

            //Try to get the requested symbols layer as a graphics layer. If none was found, return the map's main one.
            try {
                ICompositeLayer mainGraphicsLayer = (ICompositeLayer)map.get_Layer(0);
                for (int i = 0; i < mainGraphicsLayer.Count; i++) {
                    result.Add((IGraphicsContainer)mainGraphicsLayer.get_Layer(i));
                }
            } 
            catch (Exception e) {
                LogFile.appendLine_error(e);
            }

            return result;
        }

The problem of this object is that I cannot cast it to anything, when I see information in Intellisense about the object, it is a System.__ComObject. Other objects in the map are ESRI.ArcGIS.Carto.MarkerElementClass or ESRI.ArcGIS.Carto.TextElementClass. Also, I don't know programatically if the object I am accessing to is the picture drawn, or another type of object. I know that its geometry type is esriGeometryType.esriGeometryPolyline, but I have more polylines in the map, so I cannot differentiate it...

topic Re: How can I access pictures drawn by ControlsNewFreeHandToolClass? in ArcObjects SDK Questions

How can I access pictures drawn by ControlsNewFreeHandToolClass?

Re: How can I access pictures drawn by ControlsNewFreeHandToolClass?