mark all the instances of a word (Delphi, RichText)

Question

OK, this is a problem that's been nagging and I can't see to find a definitive answer. How do you find and mark all instances of a word?

What I mean is, I search for a word (say: Person). If the word exists the I mark (using red or whatever color) all instances of that word in the richedit. If I press Esc then it gets deselected.

Any ideas?

code is appreciated.

Answer 1

wonderer, I wrote this code, I hope it will be useful :

Procedure MarkString(RichEdit:TRichEdit;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;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

Bye.