>WinForms have a flat structure, not like VFP, where you have the container and other controls being able to contain further controls.

Thanks for that tidbit, I'm a C# newb. So all controls are parented to the form and a container object in c# strictly manages it children by reference. I'll have to think about that one for a bit. May have to change some of my common methods of encapsulating my code.

>If you make your olepublic vfp form withoiut a tilebar and borderless and use winapi to make the winform the parent of the vfp form you could embed some vfp "control" into a Winform, haven't tried to do so, and it feels cumbersome, not really worth it.

But it might work, and if it does it saves me many days of rewriting, so it's worth a shot. I'll play with that.