PointMonitor on Feature Objects

[Anonymous]

Is it posible to implement PointMonitor to show some info about Feature Objects linked with FDO?

Thanks

[norman.yuan]

Yes, it is definitely possible. Just as you can show regular Acad entity info with PointMonitor event hanlder (PointMonitorEventArgs.AppendToolTip()), you can use Autodesk.Gis.Map.Platform.Interop.AcMapFeatureEntityService class to obtain feature object information from an Acad entity's ObjectId.

Here is an runable example:

using System.Text;

using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;

using Autodesk.Gis.Map.Platform.Interop;
using OSGeo.MapGuide;

[assembly: CommandClass(typeof(MapFeatureTest.MyCommands))]

namespace MapFeatureTest
{
    public class MyCommands
    {
        private Document _dwg = null;
        private bool _msgOn = false;

        [CommandMethod("MapMsgOn")]
        public void MsgOn()
        {
            if (_dwg == null)
            {
                _dwg = Application.DocumentManager.MdiActiveDocument;
                _dwg.Editor.PointMonitor += 
                    new PointMonitorEventHandler(Editor_PointMonitor);
            }

            _msgOn = true;
        }

        [CommandMethod("MapMsgOff")]
        public void MsgOff()
        {
            if (_dwg == null)
            {
                return;
            }
            else
            {
                _dwg.Editor.PointMonitor -= Editor_PointMonitor;
            }

            _msgOn = false;
        }

        private void Editor_PointMonitor(
            object sender, PointMonitorEventArgs e)
        {
            if (_dwg == null) return;
            if (!_msgOn) return;

            Editor ed = _dwg.Editor;

            FullSubentityPath[] paths = e.Context.GetPickedEntities();
            if (paths.Length > 0)
            {
                ObjectId[] ids=paths[0].GetObjectIds();
                if (ids.Length > 0)
                {
                    ObjectId selId = ids[ids.Length - 1];

                    string tipText = GetToolTip(selId);
                    e.AppendToolTipText(tipText);
                }
            }
        }

        private string GetToolTip(ObjectId selId)
        {
            StringBuilder str = new StringBuilder();
            str.Append("ObjectId: " + selId.ToString() + "\n");
            str.Append("DxfName: " + selId.ObjectClass.DxfName + "\n");

            if (selId.ObjectClass.DxfName.ToUpper() == "MAPBULKFEATURE")
            {
                str.Append("Feature: " + 
                    AcMapFeatureEntityService.
                    GetLayer(selId).FeatureClassName + "\n");
            }

            return str.ToString();
        }
    }
}

 "Netload" this code into AutoCAD and enter "MapMsgOn" command. Then if you move cursor over an Acad entity or a map feature entity in Acad editor and wait a moment, a tooltip will show.

[Anonymous]

I load SDF file with few Feature objects

I dont know why but I am getting this error

[norman.yuan]

I have no idea. In my test, I added feature objects from a shape file. It works well.

See this vidoe clip

[Anonymous · Accepted solution]

i don't know if this helps, but i was also getting this error and it stopped when i turned off the rollover tooltips

[Anonymous]

That's it! It worked!

Thanks

[Anonymous]

Sorry, but i have the same question.

We can see feature object information, can we read object data?

I think that we have to use mgfeaturereder to read odject data, for this reason I link mgselectionbase:

Dim paths As FullSubentityPath() = e.Context.GetPickedEntities()
If paths.Length > 0 Then
 Dim ids As ObjectId() = paths(0).GetObjectIds()
If ids.Length > 0 Then
 Dim selId As ObjectId = ids(ids.Length - 1)
Dim selIdCollection as objectidcollection = nothing

sellidcollection.add(selid)

Dim MgSelBas as new mgselectionbase =  Autodesk.Gis.Map.Platform.Interop.AcMapFeatureEntityService.getfeatures(sellidcollectionl) ' after this line my Autocad Map 3D crashes 
  End If
End If

Can we read data and show it on tooltips?