var
Y: Integer;
begin
Y := 1;
// if Y < 0 then Exit;//安全检查
// if Y >= RichEdit1.Lines.Count then Exit;//安全检查
RichEdit1.CaretPos := Point(0, Y);
RichEdit1.SelLength := Length(RichEdit1.Lines[Y]);
RichEdit1.SelAttributes.Color := clRed;
end;
转载于:https://www.cnblogs.com/lzj1981/archive/2013/04/29/3050554.html