The Road to Delphi

Delphi – Free Pascal – Oxygene

How to mark all the instances of a word in a TRichEdit using Delphi

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the Nect code shows how to mark all the instances of a word in a TRichEdit using Delphi


procedure MarkString(RichEdit:TRichEdit;const strtomark : string);
Var
FoundAt : integer;
begin
    FoundAt:=RichEdit.FindText(strtomark,0,maxInt,[stWholeWord]);
    while FoundAt <> -1 do
    begin
             RichEdit.SelStart := FoundAt;
             RichEdit.SelLength := Length(strtomark);
             RichEdit.SelAttributes.Style := [fsBold];
             RichEdit.SelAttributes.Color := clRed;
             RichEdit.SelText :=strtomark;
             FoundAt:=RichEdit.FindText(strtomark,FoundAt + length(strtomark),maxInt,[stWholeWord]);
    end;
end;


procedure UnMarkString(RichEdit:TRichEdit;const strtomark : string);
Var
FoundAt : integer;
begin
    FoundAt:=RichEdit.FindText(strtomark,0,maxInt,[stWholeWord]);
    while FoundAt <> -1 do
    begin
             RichEdit.SelStart := FoundAt;
             RichEdit.SelLength := Length(strtomark);
             RichEdit.SelAttributes.Style := [];
             RichEdit.SelAttributes.Color := clBlack;
             RichEdit.SelText :=strtomark;
             FoundAt:=RichEdit.FindText(strtomark,FoundAt + length(strtomark),maxInt,[stWholeWord]);
    end;
end;


MarkString(RichEdit1,'delphi'); //To Mark a string

UnMarkString(RichEdit1,'delphi'); //To UnMark a string


Author: Rodrigo

Just another Delphi guy.

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