[nedd]

Код:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Grids;

type
  TForm1 = class(TForm)
    StringGrid1: TStringGrid;
    Edit1: TEdit;
    procedure StringGrid1EndDrag(Sender, Target: TObject; X, Y: Integer);
    procedure FormCreate(Sender: TObject);
    procedure FormDockOver(Sender: TObject; Source: TDragDockObject; X,
      Y: Integer; State: TDragState; var Accept: Boolean);
    procedure StringGrid1MouseActivate(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y, HitTest: Integer;
      var MouseActivate: TMouseActivate);
  private
    { Private declarations }
  public
    { Public declarations }
   i, j : integer;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var i, j : byte;
begin
 for i := 1 to 3 do
    for j := 1 to 3 do      
 StringGrid1.Cells[i, j]:=IntToStr(i*j);
end;

procedure TForm1.FormDockOver(Sender: TObject; Source: TDragDockObject; X,
  Y: Integer; State: TDragState; var Accept: Boolean);
begin
 Accept:=True;
end;

procedure TForm1.StringGrid1EndDrag(Sender, Target: TObject; X, Y: Integer);

begin
 Edit1.Text:=StringGrid1.Cells[J, I];
end;

procedure TForm1.StringGrid1MouseActivate(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y, HitTest: Integer;
  var MouseActivate: TMouseActivate);
begin
StringGrid1.MouseToCell(X, Y, J, I);
{Showmessage(StringGrid1.Cells[J, I]);}
end;





end.

Только StringGrid на DBGrid поменяйте, должно работать. Накатал на скорую руку. С уважением