[Closed] Modifier in c# not working

Hello all.

I’m trying to learn how to make my own extensions to 3dsmax 2012 and chose c# for doing that. I compile the code in the end of the post and copy the generated SurfaceRelax.dll file to bin/assemblies inside the 3dsmax folder.

The issues:
[ol]
[li]The “samplemod” modifier appears and I can put it on an sphere. But it turns to become just an “object” modifier, of DummyClass().
[/li][li]I tried to add a sample parameter called “numbers” to the modifier. Seems it didn’t work.
[/li][li]The commented lines I added to the AssemblyMain so to write a phrase to the listener causes an error at startup.
[/li][/ol]

Question is that I have no further clue about how to make it work. :shrug: I can’t find any tutorial or how-to. Any help is much appreciated.

PS: I know the modifier does nothing right now. (return;)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Max;

namespace SurfaceRelax {

  [Flags] enum ChannelPartID : uint {
    // The topology channel - the face or polygon structures. 
    TOPO_CHANNEL = 1 << 0,
    // The vertices of the object. 
    GEOM_CHANNEL = 1 << 1,
    // The texture vertices and procedural mappings. 
    TEXMAP_CHANNEL = 1 << 2,
    // This is no longer used. 
    MTL_CHANNEL = 1 << 3,
    // The sub-object selection channel. 
    SELECT_CHANNEL = 1 << 4,        
    // The current level of selection. 
    SUBSEL_TYPE_CHANNEL = 1 << 5,
    // The miscellaneous bits controlling the item's display. 
    DISP_ATTRIB_CHANNEL = 1 << 6,
    // The color per vertex channel. 
    VERTCOLOR_CHANNEL = 1 << 7,
    // The used internally by 3ds Max for stripping. 
    GFX_DATA_CHANNEL = 1 << 8,
    // Displacement approximation. 
    DISP_APPROX_CHANNEL = 1 << 9,
    // The channel used by extension channel objects. 
    EXTENSION_CHANNEL = 1 << 13,
    // The ObjectState Transform that flows down the pipeline. 
    TM_CHANNEL = 1 << 10,
    // For internal use. 
    EDGEVISIBILITY_CHANNEL = 1 << 11,
    // For internal use. 
    DONT_RECREATE_TRISTRIP_CHANNEL = 1 << 12,
    // This is no longer used. 
    GLOBMTL_CHANNEL = (uint)1 << 31,
    OBJ_CHANNELS = TOPO_CHANNEL | GEOM_CHANNEL | SELECT_CHANNEL | TEXMAP_CHANNEL | MTL_CHANNEL | SUBSEL_TYPE_CHANNEL | DISP_ATTRIB_CHANNEL | VERTCOLOR_CHANNEL | GFX_DATA_CHANNEL | DISP_APPROX_CHANNEL | EXTENSION_CHANNEL,
    ALL_CHANNELS = (uint)OBJ_CHANNELS | (uint)TM_CHANNEL | (uint)GLOBMTL_CHANNEL 
  }

  public class SurfaceRelax : Autodesk.Max.Plugins.OSModifier {

    public class SurfaceRelaxDescriptor : Autodesk.Max.Plugins.ClassDesc2 { 

      IParamBlockDesc2 paramBlockDesc;
      public IParamBlockDesc2 ParamBlockDesc {

        get { return this.paramBlockDesc; }
      }

      IGlobal global;
      IClass_ID classID;

      public IGlobal Global {

        get { return this.global; }
      }

      public SurfaceRelaxDescriptor(IGlobal global_) {
        this.global = global_;

        this.classID = this.global.Class_ID.Create(0x43a73fbd, 0x4dcd0e93);

        this.paramBlockDesc = this.global.ParamBlockDesc2.Create( 0, 
                                                                  "Parameters", 
                                                                  IntPtr.Zero, 
                                                                  this,
                                                                  (ParamBlock2Flags)(
                                                                    (int)ParamBlock2Flags.Version + 
                                                                    (int)ParamBlock2Flags.AutoConstruct + 
                                                                    (int)ParamBlock2Flags.AutoUi 
                                                                  ),
                                                                  new object[] { 1, 0 } );
        // Add parameter and specify name, type, flags, control id, default, minimum, and maximum values
        this.paramBlockDesc.AddParam( 0, new object[] { "Number", ParamType2.Float, ParamBlock2Flags.Animatable, 0, 0.5f, 0.0f, 1.0f } );
      }

      public override string Category {

        get { return "Samples"; }
      }

      public override IClass_ID ClassID {

        get { return classID; }
      }

      public override string ClassName {

        get { return "SampleMod"; }
      }

      public override object Create( bool loading ) {

         return new SurfaceRelax( this );
      }

      public override bool IsPublic {

        get { return true; }
      }

      public override SClass_ID SuperClassID    {

        get { return SClass_ID.Osm; }
      }
    } //class SurfaqceRelaxDescriptor

    SurfaceRelaxDescriptor sdescriptor;
    IInterval validity;

    public SurfaceRelax(SurfaceRelaxDescriptor descriptor) : base () {

      this.sdescriptor = descriptor;
      this.validity = this.sdescriptor.Global.Interval.Create ();
      this.validity.SetInfinite();
    }


    public override uint ChannelsChanged {

      get { return (uint)ChannelPartID.GEOM_CHANNEL; }
    }

    public override uint ChannelsUsed {

      get { return (uint)ChannelPartID.GEOM_CHANNEL; }
    }

    public override IClass_ID InputType {

      get { return sdescriptor.Global.DefObjectClassID; }
    }

    public override void ModifyObject(int t, IModContext mc, IObjectState os, IINode node) {
      
      return;
    }

    public override ICreateMouseCallBack CreateMouseCallBack {
      get { return null; }
    }

    public override RefResult NotifyRefChanged(IInterval changeInt, IReferenceTarget hTarget, ref UIntPtr partID, RefMessage message) {

      return RefResult.Succeed;
    }
  } //class SurfaceRelax

  public static class AssemblyFunctions {

    public static void AssemblyMain() {

      IGlobal      g = Autodesk.Max.GlobalInterface.Instance;
      IInterface13 i = g.COREInterface13;
      i.AddClass(new SurfaceRelax.SurfaceRelaxDescriptor(g));
      //g.TheListener.EditStream.Wputs("It's ALIVE...");
      //g.TheListener.EditStream.Flush();
    }

    public static void AssemblyShutdown() {

    }
  }
} //namespace