Stefano, So many questions, so little time. :)

>I must write a complex application where logic and data are best with VFP but I need a powerful user interface:
>
>How can I manage Forms with automatic scrolling for simulate e-forms?

VFP6 forms have a built in scrollbar. Check the scrollbars property.

>How is possible to insert frames or scrolling panels into forms?

Use a listbox control or editbox control. There is also activex stuff like richtext etc.

>How is possible create reports with metafiles as background image ?

Probably go to a third party report writer. Maybe someone else will answer this one better.

>How is possible create a navigator where buttons have repeat features?

I haven't done it but you can use the mousedown event and launch a timer. When the timer exires repeat some command until mouse up then turn off the timer.

>
>There is a good library with frames, panels, scrolling area, buttons and other?

Look through the files section here or in the VFP6 components. Also, look at VFP5 solutions.app and VFP6 solutions.app.

>
>There is a good report writer that manage WMF or other metafiles?
>
>There is another grid that can manage automatic append when record is no empty and ignore blank records (like Access or other grids)?

In VFP you have to do all of that yourself. There are a number of recommended and not so recommended ways to handle grids. Appending check the allowaddnew() property, or, in keypress() of the grid or one of it's members use eof().

Ignoring blank records kinda depends on what you mean by blank. If you want to filter your data thne use an SQL statement to populate the grid with whatever data you want to show. Check the recordsource and recordsourcetype properties. I can give you examples if you need it.

>
>All grids or library that I know don't manage direct Fox tables but ADO, RDO, etc.
>
>I need powerful interface that VFP don't have.

If your going to use VFP you will find that interfaces built with foxpro can do anything the others do(and much much more) but you have to know how. Thus the learning curve. It would be to your benefit to learn as much as possible so you can use VFP exclusively.

>
>(I tried with Delphi and the result is that I have a best interface but I lose VFP power in data quering and database management)
>
>Who help me?

The best thing to do is start with something specific and someone here will point you in the right direction.