Title: How to search and replace text in a RichEdit
function Search_And_Replace(RichEdit: TRichEdit;
SearchText, ReplaceText: string): Boolean;
var
startpos, Position, endpos: integer;
begin
startpos := 0;
with RichEdit do
begin
endpos := Length(RichEdit.Text);
Lines.BeginUpdate;
while FindText(SearchText, startpos, endpos, [stMatchCase])-1 do
begin
endpos := Length(RichEdit.Text) - startpos;
Position := FindText(SearchText, startpos, endpos, [stMatchCase]);
Inc(startpos, Length(SearchText));
SetFocus;
SelStart := Position;
SelLength := Length(SearchText);
richedit.clearselection;
SelText := ReplaceText;
end;
Lines.EndUpdate;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
Search_And_Replace(Richedit1, 'OldText', 'NewText');
end;