有没有办法画Ｔmemo控件中不同行的背景色？

[hehaa]

如：第１行红，第二行绿．．等．

[lxpbuaa]

用TRichEdit，如：
begin
RichEdit1.SelStart := 0;
RichEdit1.SelLength := Length(RichEdit1.Lines[0]);
RichEdit1.SelAttributes.Color := clRed;
end;

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宠辱不惊，看庭前花开花落，去留无意；毁誉由人，望天上云卷云舒，聚散任风。
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[bai11]

哪每一行的字呢？第一行红字，第二行绿字。。。。。。

[hehaa]

RxRichEd...没有安装．．．．．．．．．．．．．

不过我已经用画布画上去了．．．

[hehaa]

to lxpbuaa(桂枝香在故国晚秋) :
我是要它背景变色．．．不是字体．．有没有办法？

或者别的控件有吗？就是选中这一行时，背景变色．．

[DWGZ]

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ComCtrls, RichEdit, RxRichEd;

type
TForm1 = class(TForm)
RichEdit1: TRichEdit;
Button1: TButton;
RxRichEdit1: TRxRichEdit;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var Fmt :TCharFormat2;
begin
FillChar(Fmt, SizeOf(TCharFormat2), 0);
Fmt.cbSize := SizeOf(TCharFormat2);
Fmt.dwMask := CFM_BACKCOLOR;
Fmt.crBackColor := ColorToRGB(clRed);
SendMessage(RichEdit1.Handle, EM_SETCHARFORMAT, SCF_ALL, LPARAM(@Fmt));
end;