DBMOD = 32 ?

glanard — Thu, 20 Dec 2012 07:37:09 GMT

Hi,

Can anyone give me an example how to get the system variable DBMOD = 32 or (DBMOD AND 32)=32?

Actually, I consider the drawing need really to be saved only if DBMOD is equal to 1,4 or 5. Is that right?

Regards,

Re: DBMOD = 32 ?

Alexander.Rivilis — Thu, 20 Dec 2012 10:34:05 GMT

In order to set DBMOD variable you can P/Invoke acdbSetDbmod function:

long __cdecl acdbSetDbmod(class AcDbDatabase *, long newDBMod);

Example:

using System;
using System.Runtime.InteropServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
[assembly: CommandClass(typeof(Rivilis.SetDbMod))]
namespace Rivilis
{
    public class SetDbMod
    {
        [System.Security.SuppressUnmanagedCodeSecurity]
        [DllImport("acdb16.dll", CallingConvention = CallingConvention.Cdecl,
           EntryPoint = "?acdbSetDbmod@@YAJPAVAcDbDatabase@@J@Z")]
        private static extern Int32 acdbSetDbmod16(IntPtr db, Int32 newDbMod);
        [System.Security.SuppressUnmanagedCodeSecurity]
        [DllImport("acdb17.dll", CallingConvention = CallingConvention.Cdecl,
           EntryPoint = "?acdbSetDbmod@@YAJPAVAcDbDatabase@@J@Z")]
        private static extern Int32 acdbSetDbmod17(IntPtr db, Int32 newDbMod);
        [System.Security.SuppressUnmanagedCodeSecurity]
        [DllImport("acdb18.dll", CallingConvention = CallingConvention.Cdecl,
           EntryPoint = "?acdbSetDbmod@@YAJPAVAcDbDatabase@@J@Z")]
        private static extern Int32 acdbSetDbmod18(IntPtr db, Int32 newDbMod);
        [System.Security.SuppressUnmanagedCodeSecurity]
        [DllImport("acdb19.dll", CallingConvention = CallingConvention.Cdecl,
           EntryPoint = "?acdbSetDbmod@@YAJPAVAcDbDatabase@@J@Z")]
        private static extern Int32 acdbSetDbmod19(IntPtr db, Int32 newDbMod);

        public static Int32 acdbSetDbmod(ref Database db, Int32 newDbMod)
        {
            switch (Autodesk.AutoCAD.ApplicationServices.Application.Version.Major)
            {
                case 16: return acdbSetDbmod16(db.UnmanagedObject, newDbMod);
                case 17: return acdbSetDbmod17(db.UnmanagedObject, newDbMod);
                case 18: return acdbSetDbmod18(db.UnmanagedObject, newDbMod);
                case 19: return acdbSetDbmod19(db.UnmanagedObject, newDbMod);
                default: return (Int32)ErrorStatus.NotImplementedYet;
            }
        }
        //--------------------------------------
        // Clear DbMod for Active document
        // Очистка DBMOD для активного документа
        //--------------------------------------
        [CommandMethod("ClearCurDbMod")]
        static public void ClearCurDbMod()
        {
            Database db = Application.DocumentManager.MdiActiveDocument.Database;
            acdbSetDbmod(ref db, 0);
        }

        //--------------------------------------
        // Clear DbMod for All opened documents
        // Очистка DBMOD для всех документов
        //--------------------------------------
        [CommandMethod("ClearAllDbMod")]
        static public void ClearAllDbMod()
        {
            foreach (Document doc in Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager)
            {
                Database db = doc.Database;
                acdbSetDbmod(ref db, 0);
            }
        }
    };
}

This code is only for x86 AutoCAD. x64 is different with EntryPoint string:

EntryPoint = "?acdbSetDbmod@@YAJPEAVAcDbDatabase@@J@Z"

Re: DBMOD = 32 ?

glanard — Thu, 20 Dec 2012 13:22:55 GMT

Hi Alexander,

Probably my question was not very clear (probably due to my poor english).

I do not want to set the DBMOD variable.

Futher more, I really don't see the interset to set this variable

What I wanted to know is, in the reality as a simple user, in which case this variable can be found equal to 32.

In the documentation, they talk about "field"?!

I tried some tests modifying text's field, but this does not set the DBMOD to 32...

Regards,

Re: DBMOD = 32 ?

Alexander.Rivilis — Thu, 20 Dec 2012 18:15:00 GMT

@glanard wrote:

What I wanted to know is, in the reality as a simple user, in which case this variable can be found equal to 32.

In the documentation, they talk about "field"?!

I do not know how a normal user can get value DBMOD = 32 without using the application.
Also, I should clarify that the function acdbSetDbmod is undocumented and unsupported and could change or go away in any future release including an API compatible release , I was reminded the guys from Autodesk.

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