How do I replace a keyword in a richedit in DELPHI

Question

0.00/5 (No votes)

See more:

Ok I have a dilemma, I have my program functioning perfectly right now, all I have to do is take pre-existing information in my rich edit for example:

NOMBRE: #########

APPELIDOS: #########

EMAIL: #########

TELEFONO DE ESTUDIANTE: #########

TELEFONO DE #########: #########

TELEFONO DE #########: #########

NIVEL DE LENGUAJE: *********

Now what I want to do is Replace the '*********' with another string through the use of an update button and a Tcombobox, but I dont have heads or tails on how to do the code, please help me!!!

What I have tried:

Everything and google hasnt helped me.

Posted 23-Aug-16 6:46am

Crytach Daiguren

Updated 23-Aug-16 11:30am

Maciej Los

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Answer 1 · 2016-08-23T11:30:00

Insert ReplaceDialog component.
Add new ReplaceText event (Object Explorer -> Events bookmark)
Paste below code (for RichEdit component):

Delphi

procedure TForm1.ReplaceDialog1Replace(Sender: TObject);
 
var
  SelPos: Integer;
begin
  with TReplaceDialog(Sender) do
  begin
    SelPos := Pos(FindText, RichEdit1.Lines.Text);
    if SelPos > 0 then
    begin
      RichEdit1.SelStart := SelPos - 1;
      RichEdit1.SelLength := Length(FindText);
      { Replace selected text with ReplaceText }
      RichEdit1.SelText := ReplaceText;
    end
    else MessageDlg(Concat('No more matches for: "', FindText, '" have been found in the current document'), mtError, [mbOk], 0);
 
  end;
 
end;

Now, insert new button and add OnClick event for it (as the same way you've added it previously) and paste below code:

Delphi

ReplaceDialog1.Execute;

And finally, add OnFind event to the ReplaceDialog

Delphi

procedure TForm1.ReplaceDialogFind(Sender: TObject);
var
  FoundAt: LongInt;
  StartPos, ToEnd: Integer;
begin
  with RichEdit1 do
  begin
{ if there's selected text, start looking from that place, in other case, start looking from the beginning }
    if SelLength <> 0 then
      StartPos := SelStart + SelLength
    else
      StartPos := 0;
 
  { find the end of text }
    ToEnd := Length(Text) - StartPos;
 
    FoundAt := FindText(ReplaceDialog1.FindText, StartPos, ToEnd, [stMatchCase]);
    if FoundAt <> -1 then
    begin
      SetFocus;
      SelStart := FoundAt;
      SelLength := Length(ReplaceDialog1.FindText);
    end;
  end;
end;

That's all!

Another way:
How to search and replace text in a RichEdit - Delphi Tips - CJC Delphi[^]