[[Caral]]

Hola
Ninca lo he probado, pero intentalo asi:

Código Delphi [-]
procedure TForm_Main.CrearFormTabSheet( TabSheet:TTabSheet );
begin
  Application.CreateForm(TForm_TabSheet, Form_TabSheet);
  with Form_TabSheet do begin
       Application.ProcessMessages;
       Parent      := TabSheet;
       Align       := alClient;
       BorderStyle := bsNone;
    try
     ShowModal;
   finally
     Free;
   end;
  end;
end;

Saludos