如何在dbgrid中显示图形。

[shushan]

各位大虾：
要如何才能在Dbgrid中显示图形呢，请各位大虾指点

[lotto]

unit DBPicGrd;

interface

uses
DBGrids, DB, DBTables, Grids, WinTypes, Classes, Graphics;

type
TDBPicGrid = class(TDBGrid)
protected
procedure DrawDataCell(const Rect: TRect;
Field: TField; State: TGridDrawState); override;
public
constructor Create(AOwner : TComponent); override;
published
property DefaultDrawing default False;
end;

procedure Register;

implementation

constructor TDBPicGrid.Create(AOwner : TComponent);
begin
inherited Create(AOwner);
DefaultDrawing := False;
end;

procedure TDBPicGrid.DrawDataCell(const Rect: TRect; Field: TField;
State: TGridDrawState);
var
bmp : TBitmap;
begin
with Canvas do
begin
FillRect(Rect);
if Field is TGraphicField then
try
bmp := TBitmap.Create;
bmp.Assign(Field);
Draw(Rect.Left, Rect.Top, bmp);
finally
bmp.Free;
end
else
TextOut(Rect.Left, Rect.Top, Field.Text);
end;
end;

procedure Register;
begin
RegisterComponents('Custom', [TDBPicGrid]);
end;

end.