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Memo with auto scroll text

Posted on 2011-02-26
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Last Modified: 2012-05-11
Hi,

I want to have a Memo or similar component that display many lines of text and with a auto scroll (recursive) vertical like there is in many HTML Pages.
I have Delphi 7.

Thanks!
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Question by:Andrea Matthiae
  • 3
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7 Comments
 
LVL 24

Expert Comment

by:jimyX
ID: 34988839
Here you are:
procedure TForm1.Memo1Change(Sender: TObject);
begin
  Memo1.Perform(EM_LineScroll, 0, Memo1.Lines.Count);
end;

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Author Comment

by:Andrea Matthiae
ID: 34988853
Hi,
thanks for the respose but with this code I go at the end to the text of the Memo without animation.
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LVL 24

Expert Comment

by:jimyX
ID: 34988879
What do you mean by animation? could you explain more please.
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Author Comment

by:Andrea Matthiae
ID: 34988929
Is like a "HTML Marquee Code" (search on the web) but vertical and in a Memo or similar delphi component.
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LVL 24

Accepted Solution

by:
jimyX earned 1000 total points
ID: 34989018
You can download Jedi components. It's a very rich free components:

JEDI Visual Component Library:
http://jvcl.delphi-jedi.org/

They have a great exe app that shows their different components with details. Once you download their demo (link below) the welcome screen shows exactly what you have asked:
http://sourceforge.net/projects/jvcl/files/JVCL%20Demos/JVCL%203.00%20Mega%20Demo/

The component used is JvScrollText. You can find it under the tab "Jv scrollers" (in the demo window).
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LVL 38

Expert Comment

by:Geert Gruwez
ID: 34990072
if you want a memo to autoscroll

just add a timer component
and move the caret position down a line

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Timer1: TTimer;
    procedure Timer1Timer(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Memo1.Perform(EM_LINESCROLL, 0, 1);
end;

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Author Comment

by:Andrea Matthiae
ID: 35004553
Thanks jimyX. I remembered having seen a component that did the autoscroll, but not which one! I had escaped the Jedi components.
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