unit dbcolform;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Grids, DBGrids, DB, DBTables;

type
  TForm1 = class(TForm)
    Table1: TTable;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    Label1: TLabel;
    procedure DBGrid1ColEnter(Sender: TObject);
    procedure DataSource1DataChange(Sender: TObject; Field: TField);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

type
  TFake = class (TDBGrid);

procedure TForm1.DBGrid1ColEnter(Sender: TObject);
begin
  Label1.Caption := Format (
    'Column: %2d; Row: %2d',
    [TFake (DbGrid1).Col,
    TFake (DbGrid1).Row]);
end;

procedure TForm1.DataSource1DataChange(Sender: TObject; Field: TField);
begin
  DBGrid1ColEnter (sender);
end;

end.