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Scrolling TRichEdit and TListBox

Posted on 1998-08-09
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Last Modified: 2010-04-04
I want to scroll RichEdit and TListBox components automaticly to the bottom when something is added..
How do I do that?
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Question by:mortenmo
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3 Comments
 
LVL 4

Accepted Solution

by:
erajoj earned 50 total points
ID: 1361755
Hi,
Here is an example of one way to solve it:

var
  MyString: string;
begin
  MyString := 'Whatever';
  ListBox1.ItemIndex := ListBox1.Items.Add( MyString );
  RichEdit1.Lines.Add( MyString );

  //  RichEdit1.SelStart := RichEdit1.SelStart - 2; // optional, preceed the CR+LF

  // RichEdit1.SelStart := RichEdit1.SelStart - Length( MyString ) - 2; // optional, start of added string
  // RichEdit1.SelLength := Length( MyString );

  SendMessage( RichEdit1.Handle, EM_SCROLLCARET, 0, 0 );

Uncomment the commented lines to get variations on the richedit selections after adding.

/// John
0
 
LVL 10

Expert Comment

by:viktornet
ID: 1361756
For the listbox, you can also use this way....

Listbox1.ItemIndex := Lo(listbox1.Items.count - 1);

Hope this helps a bit!

Regards,
Viktor Ivanov
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LVL 1

Author Comment

by:mortenmo
ID: 1361757
Thanks ;)
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