Searching character by character of a RichMemo

[chiong]

The attached picture is a set of data in richtext file. I am trying to extract the data one character at a time & test for the various fields such as comma or ":-" . However when I extract a single character & test it against the comma I got an error message.

Error message : Error : Operator is not overloaded : "Char" or "Longint"

What am I doing wrong ?  Thanks for any help given.

======
for i := 1 to TextLen  do
    begin
      // Select the current character
      ARichMemo.SelStart := i;
      ARichMemo.SelLength := 1;
      CurrentColor := ARichMemo.SelAttributes.Color;
      CurChar := ARichMemo.Lines.Text ;


      // Check if the color has changed
      if  CurChar =  chr(44) or i = TextLen then
      begin     
......
                 

[rvk]

      if  CurChar =  chr(44) or i = TextLen then

Aren't you forgetting the parentheses ( ( and ) ) here?

(And please use the code tag if you put code in your post. Now it's not visible that you used [ i ] after ARichMemo.Lines.Text )

[Zvoni]

And why are you running through a String comparing each character if it's a comma?
use StrScan or StrPos
Needs Unit "Strings"
https://www.freepascal.org/docs-html/rtl/strings/strscan.html