.NET

[#1]

Hi all,

I'm in the process of converting existing VBA code to VB.NET using AutoCAD 2010 and MS Visual Studio Professional, and I just hit a major snag.

In AutoCAD 2010, double-clicking a block will display its attributes in the attributes editor; I would like instead to be able to display my own custom vb.net form showing some of the block's attributes, IF AND ONLY IF the block was created by my dot net form (the block would have certain identifiable characters in its name).

So far, I have not been able to find anything to help, but I have discovered that this may have something to do with the cuix customization file, as well as setting the system variable DBLCLICKEDIT.

At this point I am so confused as to how this problem can be resolved. Does anyone have any helpful hints or concise code blocks that might help? Or at the most point me in the right direction?

Thanks in advance,

Cat

[#2]

I think the following article will be interesting for you:

http://through-the-interface.typepad.com/through_the_interface/2009/07/providing-information-on-auto...

[#3]

Thanks for the article... It's quite interesting, and will definitely come in handy for later use. For the issue at hand, however, the article describes the use of selection set to identify entities, but I'm looking for information on how to replace the CAD double-click event for blocks with my custom VB.Net form. And this is only for blocks created by said form...

Any ideas? Guidelines? Similar articles?

Thanks in advance

[#4]

Try this code written some time for double click event on polyline objects,

just change object type to double click on blockreference within the code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
//acad
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.ComponentModel;
//acad application
using AcadApp = Autodesk.AutoCAD.ApplicationServices.Application;
//acad interop
using Autodesk.AutoCAD.Interop;
using Autodesk.AutoCAD.Interop.Common;

// tested on A2010
// This line is not mandatory, but improves loading performances
[assembly: CommandClass(typeof(AutoCAD_CSharp_plug_in1.ClickEventMgd))]
namespace AutoCAD_CSharp_plug_in1
{
   public class ClickEventMgd
    {
        Autodesk.AutoCAD.Interop.AcadDocument m_doc;


        [CommandMethod("DBL")]
        public void TestDoubleClick()
        {
            if (m_doc == null)
            {
                m_doc = (Autodesk.AutoCAD.Interop.AcadDocument)AcadApp.DocumentManager.MdiActiveDocument.AcadDocument;

                m_doc.BeginDoubleClick += new _DAcadDocumentEvents_BeginDoubleClickEventHandler(m_doc_BeginDoubleClick);

            }
            else
            {
                AcadApp.SetSystemVariable("DBLCLKEDIT", 1);
                m_doc.BeginDoubleClick -= new _DAcadDocumentEvents_BeginDoubleClickEventHandler(m_doc_BeginDoubleClick);
                m_doc = null;

            }

        }

        #region "Events"
        private void m_doc_BeginDoubleClick(object adoc)
        {
            Document activeDoc = AcadApp.DocumentManager.MdiActiveDocument;
            Editor ed = activeDoc.Editor;
            AcadApp.DocumentManager.MdiActiveDocument.Editor.WriteMessage("Double click event is now hooked.");

            //get the object that the user has selected
            PromptSelectionResult res = activeDoc.Editor.SelectImplied();
            if (res.Status != PromptStatus.OK)
                return;
            if (res.Value.Count != 1)
            {
                //if more then 1 selected before double click dispaly message
                AcadApp.ShowAlertDialog("Must be selected just one object only\nHit Esc button to refresh");
                // might be Sendcommand instead but I don't like it
                return; //we don't handle multiple selected objects
            }
            ObjectId idSel = res.Value[0].ObjectId;
            
            using (Transaction trans = activeDoc.TransactionManager.StartTransaction())
            {
                Entity obj = (Entity)trans.GetObject(idSel, OpenMode.ForRead);
                if (idSel.ObjectClass != RXClass.GetClass(typeof(Polyline)))
                {
                    // for all other objects add usual way
                    AcadApp.SetSystemVariable("DBLCLKEDIT", 1);
                    return;
                }
                m_doc.SendCommand("\x03\x03");
                AcadApp.SetSystemVariable("DBLCLKEDIT", 0);
                Polyline pline = (Polyline)obj as Polyline;


                TestPlineCommand(pline);
             

                trans.Commit();
            }
         
        }
        #endregion

        #region "Commands"
       // change calling  command here
        public void TestPlineCommand(Polyline pline)
        {
            AcadApp.ShowAlertDialog(string.Format("Polyline:\nHandle: {0}\nArea: {1}\nLength: {2}\nLayer: {3}", pline.Handle.Value, pline.Area, pline.Length, pline.Layer));
        }
        #endregion
    }
}

I think you need to store block names you've created from form

in list of string as member of your form,

then compare if this list contains a block name

[#5]

Thanks, Hallex... Imma try it out right away and see how it goes.

[#6]

Hmm, perhaps you need to convert this code on VB.NET

let me know...

[#7]

You're right there... I'm already covnerting to VB.Net. I'm curious to see what would happen when I change the polyline ent to blockref.

I shall let you know once I finish converting and testing.

I deeply appreciate your help.

[#8]

Here is quick convertion very limited tested

Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
'acad
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.EditorInput
Imports Autodesk.AutoCAD.ComponentModel
'acad application
Imports AcApp = Autodesk.AutoCAD.ApplicationServices.Application
'acad interop
Imports Autodesk.AutoCAD.Interop
Imports Autodesk.AutoCAD.Interop.Common

' tested on A2010
' This line is not mandatory, but improves loading performances
<Assembly: CommandClass(GetType(AutoCAD_CSharp_plug_in1.ClickEventMgd))> 
Namespace AutoCAD_CSharp_plug_in1
    Public Class ClickEventMgd
        Private m_doc As Autodesk.AutoCAD.Interop.AcadDocument


        <CommandMethod("DBLK")> _
        Public Sub TestDoubleClick()
            If m_doc Is Nothing Then
                m_doc = DirectCast(AcApp.DocumentManager.MdiActiveDocument.AcadDocument, Autodesk.AutoCAD.Interop.AcadDocument)

                AddHandler m_doc.BeginDoubleClick, AddressOf m_doc_BeginDoubleClick
            Else
                AcApp.SetSystemVariable("DBLCLKEDIT", 1)
                RemoveHandler m_doc.BeginDoubleClick, AddressOf m_doc_BeginDoubleClick

                m_doc = Nothing

            End If

        End Sub

#Region "Events"
        Private Sub m_doc_BeginDoubleClick(adoc As Object)
            Dim activeDoc As Document = AcApp.DocumentManager.MdiActiveDocument
            Dim ed As Editor = activeDoc.Editor
            AcApp.DocumentManager.MdiActiveDocument.Editor.WriteMessage("Double click event is now hooked.")

            'get the object that the user has selected
            Dim res As PromptSelectionResult = activeDoc.Editor.SelectImplied()
            If res.Status <> PromptStatus.OK Then
                Return
            End If
            If res.Value.Count <> 1 Then
                'if more then 1 selected before double click dispaly message
                AcApp.ShowAlertDialog("Must be selected just one object only" & vbLf & "Hit Esc button to refresh")
                ' might be Sendcommand instead but I don't like it
                'we don't handle multiple selected objects
                Return
            End If
            Dim idSel As ObjectId = res.Value(0).ObjectId

            Using trans As Transaction = activeDoc.TransactionManager.StartTransaction()
                Dim obj As Entity = DirectCast(trans.GetObject(idSel, OpenMode.ForRead), Entity)
                If idSel.ObjectClass <> RXClass.GetClass(GetType(BlockReference)) Then
                    ' for all other objects add usual way
                    AcApp.SetSystemVariable("DBLCLKEDIT", 1)
                    Return
                End If
                m_doc.SendCommand(ChrW(3) & ChrW(3))
                AcApp.SetSystemVariable("DBLCLKEDIT", 0)
                Dim bref As BlockReference = TryCast(DirectCast(obj, BlockReference), BlockReference)


                TestBlockCommand(bref)


                trans.Commit()
            End Using

        End Sub
#End Region

#Region "Commands"
        ' change calling  command here
        Public Sub TestBlockCommand(bref As BlockReference)
            AcApp.ShowAlertDialog(String.Format("BlockReference:" & vbLf & "Name: {0}" & vbLf & "Handle: {1}" & vbLf & "Layer: {2}" & vbLf & "Position: {3:f3}", bref.Name, bref.Handle.Value, bref.Layer, bref.Position))
        End Sub
#End Region
    End Class
End Namespace

[#9]

Sir,

Thanks for the dot net conversion... The code seems to be flawless and makes perfect sense. However, after I implemented it into my existing namespace and executed the code by typing the command; but it doesn't seem to have the desired effect, 'cos I doubleclick on a block created by my form, and the EATTEDIT command still runs, popping up the block's attributes.

Isn't the code supposed to overwrite this behavior by now?

[#10]

Oops, sorry I didn't test this code from form

if your form is modeless maybe you could use

Editor.StartUserInteraction(Me), I haven't have a time

on this work...