怎么将这段代码变成通用过程

如何将这段代码变成通用过程
这点代码也是来自网上，它帮我实现了DBGRID控件隔行变色等功能，但我的系统用了很多dbgrid控件，所以麻烦哪位朋友帮我把这段代码变成通用过程，谢谢！

procedure   TProduct.DBGrid1DrawColumnCell(Sender:   TObject;
    const   Rect:   TRect;   DataCol:   Integer;   Column:   TColumn;
    State:   TGridDrawState);
var   i:   Integer;
begin
    if   gdSelected   in   State   then   Exit;
//定义表头的字体和背景颜色：
    for   i   :=   0   to   (Sender   as   TDBGrid).Columns.Count   -   1   do
    begin
        (Sender   as   TDBGrid).Columns[i].Title.Font.Name   :=   '宋体 ';   //字体
        (Sender   as   TDBGrid).Columns[i].Title.Font.Size   :=   9;   //字体大小
        (Sender   as   TDBGrid).Columns[i].Title.Font.Color   :=   $000000FF;   //字体颜色(红色)
        (Sender   as   TDBGrid).Columns[i].Title.Color   :=   $0000FF00;   //背景色(绿色)
    end;  
//隔行改变网格背景色：
    if   DBGrid1.DataSource.DataSet.RecNo   mod   2   =   0   then
        (Sender   as   TDBGrid).Canvas.Brush.Color   :=   clInfoBk;   //定义背景颜色
    {else
        (Sender   as   TDBGrid).Canvas.Brush.Color   :=   RGB(191,   255,   223);}//定义背景颜色
//定义网格线的颜色：
    DBGrid1.DefaultDrawColumnCell(Rect,   DataCol,   Column,   State);
    with   (Sender   as   TDBGrid).Canvas   do   //画   cell   的边框
    begin
        Pen.Color   :=   $00FF0000;   //定义画笔颜色(蓝色)
        MoveTo(Rect.Left,   Rect.Bottom);   //画笔定位
        LineTo(Rect.Right,   Rect.Bottom);   //画蓝色的横线
        Pen.Color   :=   $0000FF00;   //定义画笔颜色(绿色)
        MoveTo(Rect.Right,   Rect.Top);   //画笔定位
        LineTo(Rect.Right,   Rect.Bottom);   //画绿色的竖线
    end;
end;


[解决办法]
procedure TProduct.DrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;
State: TGridDrawState);
var i: Integer;
begin
if gdSelected in State then Exit;
//定义表头的字体和背景颜色：
for i := 0 to (Sender as TDBGrid).Columns.Count - 1 do
begin
(Sender as TDBGrid).Columns[i].Title.Font.Name := '宋体 '; //字体
(Sender as TDBGrid).Columns[i].Title.Font.Size := 9; //字体大小
(Sender as TDBGrid).Columns[i].Title.Font.Color := $000000FF; //字体颜色(红色)
(Sender as TDBGrid).Columns[i].Title.Color := $0000FF00; //背景色(绿色)
end;
//隔行改变网格背景色：
if DBGrid1.DataSource.DataSet.RecNo mod 2 = 0 then
(Sender as TDBGrid).Canvas.Brush.Color := clInfoBk; //定义背景颜色
{else
(Sender as TDBGrid).Canvas.Brush.Color := RGB(191, 255, 223);}//定义背景颜色
//定义网格线的颜色：
DBGrid1.DefaultDrawColumnCell(Rect, DataCol, Column, State);
with (Sender as TDBGrid).Canvas do //画 cell 的边框
begin
Pen.Color := $00FF0000; //定义画笔颜色(蓝色)
MoveTo(Rect.Left, Rect.Bottom); //画笔定位
LineTo(Rect.Right, Rect.Bottom); //画蓝色的横线
Pen.Color := $0000FF00; //定义画笔颜色(绿色)
MoveTo(Rect.Right, Rect.Top); //画笔定位
LineTo(Rect.Right, Rect.Bottom); //画绿色的竖线
end;
end;


//调用。。。

procedure TProduct.DBGrid1DrawColumnCell(Sender: TObject;
const Rect: TRect; DataCol: Integer; Column: TColumn;
State: TGridDrawState);
begin
DrawColumnCell(Sender,
Rect,DataCol,Column,
State);
end;