I would like from my main form open another form that is contained in the main form area and continuing having the focus on the main form, something like a MDI form. I tried to use a MDI form but I found I can't make its border invisible (BorderStyle:=BsNone). For me it's very important open the new form (like a page) without any other border and without loosing the focus. I think using a standard SDI form it is not possible keep the focus on the main form (but it's possible to hide its border). Finally, I would like to show on the main form different things (using a toolbar to choose it); I think I can get something like I want with a TabControl (or maybe with a PageControl) but I don't know how can I create different tabs with different controls (if I move a control on the TabControl, it is displayed in every tabs). Is there a component where I can put all my controls and then use it to display on the form ??? I tried with DataModule, but it hold only non-visual components.