I am trying to find out more info on how to add an ActiveX object to VTCL app. Your suggestion is appreciated. Thanks.
The Otcl extension is not yet supported by vTcl, but you can use the unmanaged frame to insert an ActiveX from Otcl.
This way, vTcl will not complain about a widget it doesn't know, since it ignores anything that is inside an unmanaged frame.
In fact you can programmatically place, pack, or grid any widget you like inside an unmanaged frame.