Как создать ComboBox внутри TStringGrid

interface 

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

type 
  TBWControlStringGrid = class(TStringGrid) 
  private 
    fComboBox:TCombobox; 
    Procedure WMCommand( 
        var msg: TWMCommand ); message WM_COMMAND; 
    procedure DblClick;override; 
    procedure Click;override; 
    procedure RelocateComboBox; 
    procedure HideCombobox; 
  protected 
    procedure KeyPress(var Key: Char); override; 
  public 
    Constructor Create(AOWner:TComponent);override; 
    Destructor Destroy;override; 
  published 
  end; 

procedure Register; 

implementation 

procedure Register; 
begin 
  RegisterComponents('hEaDRoOm', [TBWControlStringGrid]); 
end; 
procedure TBWControlStringGrid.WMCommand(var msg: TWMCommand); 
begin 
  If EditorMode and ( msg.Ctl = fComboBox.Handle ) Then 
    inherited 
  Else 
    If msg.Ctl <> 0 Then 
      msg.result := 
        SendMessage( msg.ctl, CN_COMMAND, 
                     TMessage(msg).wparam, 
                     TMessage(msg).lparam ); 
end; 
procedure TBWControlStringGrid.KeyPress(var Key: Char); 
begin 
  if Key=#13 then 
    RelocateComboBox 
   else HideCombobox; 

end; 
procedure TBWControlStringGrid.DblClick; 
begin 
  inherited; 
  RelocateComboBox; 
end; 
procedure TBWControlStringGrid.Click; 
begin 
  inherited; 
  HideCombobox; 
end; 
procedure TBWControlStringGrid.RelocateComboBox; 
begin 
  fcombobox.boundsrect := CellRect( Selection.Left, Selection.Top); 
  fcomboBox.Visible:=TRUE; 
  fcombobox.setfocus; 
end; 
procedure TBWControlStringGrid.HideCombobox; 
begin 
  fcomboBox.Visible:=false; 
end; 
Constructor TBWControlStringGrid.Create(AOWner:TComponent); 
begin 
  inherited Create(Aowner); 
  fComboBox:=TComboBox.Create(self); 
  fComboBox.Parent:=self; 
  fComboBox.Visible:=FALSE; 
  Options:=Options-[goRangeSelect]; 
end; 
Destructor TBWControlStringGrid.Destroy; 
begin 
  fComboBox.Destroy; 
  inherited destroy; 
end; 

end.

Это конечно, только скелет...

Должен иметься механизм для получения/выбора текста из ComboBox в ячейку, а также для передачи содержания ячеек в ComboBox.