Plugin DLL

I have a main Form wich load dinamicly plugin's.
Each plugin contains a toolbar and a screenbar (1 TForm for each).
The ScreenBar contains 5 TForms which are shown by a button click on the toolbar.
I have no problem to link my plugin in the main Form. But when i use the tab key on then screenbar, the focus doesn't go to the next edit field of the screenbar. It goes to the Main form. Anybody could help me ?


here is my code to initialize the plugin. Form1=the toolBar,Form2=the screenbar wich contains Form3 to Form7. ParentTools and ParentScreen are the TWincontros of Main Form wich must contains Form1 and Form2 .

function Initialize(App:TApplication;ParentTools, ParentScreen: TWincontrol;DataBaseHandle:HDBIDB; var OnPtr : TNotifyEvent;var FormTools,FormScreen:TForm):TForm;
var
   P:Tpoint;
begin
     if Init=False then
     begin
         PlugApp:=Application;
         Application:=App;
         OnChange := OnPtr;
         Form1:=TForm1.Create(Application.MainForm);
         Form2:=TForm2.Create(Application.MainForm);
         Form3:=TForm3.Create(application.MainForm);
         Form4:=TForm4.Create(application.MainForm);
         Form5:=TForm5.Create(application.MainForm);
         Form6:=TForm6.Create(application.MainForm);
         Form7:=TForm7.Create(application.MainForm);
    end;
end;