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From: jerry@jvdsys.nextjk.stuyts.nl (Jerry van Dijk)
Subject: Re: Troubles : New_Page & Get_Immediate
Date: 1997/10/18
Message-ID: <877159374.61snx@jvdsys.nextjk.stuyts.nl>#1/1
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Distribution: world
References: <01bcdae4$3f70ffa0$0f02000a@default>
Organization: *JerryWare HQ*, Leiden, Holland
Newsgroups: comp.lang.ada
Date: 1997-10-18T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <01bcdae4$3f70ffa0$0f02000a@default> bjyxxl@echidna.stu.cowan.edu.au writes:

>When trying to use New_Page as in
>   New_Page;
>to simply refresh the screen in output of text to the screen all I'm
>getting is a weird symbol

As New_Page suggests, this is a printer-like command. The funny character
you are seeing is called the 'form-feed' code, instructing the printer
to move to the next page.

On some consoles, sending a form-feed will actually clear the screen,
on others it will simply display the character. On Win95 (if that is
what you are using) the latter is the case.

A very simple solution is:

   Num_Rows : constant := 25; -- number of screen rows;

   procedure Clear_Screen is
   begin
      for I in 1 .. Num_Rows loop
         New_Line;
      end loop;
   end Clear_Screen;

--

-- Jerry van Dijk | Leiden, Holland
-- Consultant     | Team Ada
-- Ordina Finance | jdijk@acm.org