>Did you try the forms interop toolkit ? >http://msdn.microsoft.com/en-us/vstudio/bb419144
Hey now that's really interesting. The trouble is the web page doesn't explain how it works. I'll install the MSI and see if it has technical information on what it does. I'm wondering if it avoids COM registration. >Failing that, I would have tried the .NET UI as a user control ;) Yes, we're not going to try and make VB6 call .NET Forms (separate windows). Our first option was to write everything but the UI in .NET, leaving only a thin shell of a UI in VB6. Now we have a second option ... if this Interop kits works well then we can perhaps easily reuse complete .NET controls in the VB6 app and slowly phase it out. Greg
