Hello again,

I’m having some difficulties implementing IRestoreObj. The examples I found in the SDK documentation don’t need to override all the methods I have (I guess this is because how the wrapper works). However, I’ve implemented all of the methods (maybe not correctly), but when I do this:

SelectionRestore test = new SelectionRestore(node, m_Global.Point3.Create(30,30,30));

IHold hold = m_Global.TheHold;
hold.Begin();
if (hold.Holding)
hold.Put(test); //Exception

I get a 'System.InvalidCastException' error: Unable to cast object of type 'AnimateTest.SelectionRestore' to type 'Autodesk.Max.IImplementable'.

public class SelectionRestore : IRestoreObj
{
//datamembers

public SelectionRestore(IINode node, IPoint3 undoValue)
{
//cut because of space
}

public string Description
{get { return "Undo Movement of node"; }}

public void EndHold()
{ }

public IntPtr Execute(int cmd, UIntPtr arg1, UIntPtr arg2, UIntPtr arg3)
{return new IntPtr(-1);}

public void Redo()
{
//cut because of space
}

public void Restore(bool isUndo)
{
//cut because of space
}

public int Size
{get { return 1; }}

public IBaseInterface GetInterface(IInterface_ID id)
{return null;}

public bool Equals(IInterfaceServer other)
{return Equals(other);}

public void Dispose()
{ }

public IntPtr Handle
{get { return new IntPtr(-1); }}
}

Any idea what I could do?

Thanks in advance,

Vin