How to P/Invoke acdbGetCurVportTableRecordId for AutoCAD 2008?

[csharpbird]

        [DllImport("acdb17.dll", CallingConvention = CallingConvention.Cdecl, EntryPoint = "?acdbGetCurVportTableRecordId@@YA?AVAcDbObjectId@@PAVAcDbDatabase@@@Z")]
        private extern static ObjectId acdbGetCurVportTableRecordId(IntPtr dbObject);
        public static ObjectId CurrentViewportTableRecordId(this Database db)
        {
            return acdbGetCurVportTableRecordId(db.UnmanagedObject);
        }

When i call the CurrentViewportTableRecordId function,I get System.AccessViolationException exception.
Any help?

[Alfred.NESWADBA]

Hi,

why do you use invoking for that? Looking into the object-browser I found (for 17.1):

Public ReadOnly Property CurrentViewportObjectId() As Autodesk.AutoCAD.DatabaseServices.ObjectId
     Member von Autodesk.AutoCAD.EditorInput.Editor

Is that also ok? 😉

- alfred -

[csharpbird]

Thanks for your reply.

But it seems that you cannot P/Invoke the functions wich return an ObjectId value.