unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, OleCtrls, SHDocVw_TLB, ActiveX, StdCtrls;

type
TForm1 = class TForm)
WebBrowser1: TWebBrowser;
Button1: TButton;
Button2: TButton;
procedure FormDestroy Sender: TObject);
procedure FormCreate Sender: TObject);
procedure Button1Click Sender: TObject);
procedure Button2Click Sender: TObject);
private
{ Private declarations }
FOleInPlaceActiveObject: IOleInPlaceActiveObject;
procedure MsgHandler var Msg: TMsg; var Handled: Boolean);
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormDestroy Sender: TObject);
begin
FOleInPlaceActiveObject := nil;
end;

procedure TForm1.FormCreate Sender: TObject);
begin
Application.OnMessage := MsgHandler;
end;

procedure TForm1.MsgHandler var Msg: TMsg; var Handled: Boolean);
const
DialogKeys: set of Byte = [VK_LEFT, VK_RIGHT, VK_BACK, VK_UP, VK_DOWN,
$30..$39, $41..42, $44..$55, $57, $59..$5A];
var
iOIPAO: IOleInPlaceActiveObject;
Dispatch: IDispatch;
begin
{ exit if we don’t get back a webbrowser object }
if  WebBrowser1 = nil) then
begin
Handled := System.False;
Exit;
end;

Handled :=  IsDialogMessage WebBrowser1.Handle, Msg) = System.True);

if  Handled) and  not WebBrowser1.Busy) then
begin
if FOleInPlaceActiveObject = nil then
begin
Dispatch := WebBrowser1.Application;
if Dispatch <> nil then
begin
Dispatch.QueryInterface IOleInPlaceActiveObject, iOIPAO);
if iOIPAO <> nil then
FOleInPlaceActiveObject := iOIPAO;
end;
end;

if FOleInPlaceActiveObject <> nil then
if   Msg.message = WM_KEYDOWN) or  Msg.message = WM_KEYUP)) and
 Msg.wParam in DialogKeys) then
// nothing - do not pass on the DialogKeys
else
FOleInPlaceActiveObject.TranslateAccelerator Msg);
end;
end;

initialization
OleInitialize nil);

finalization
OleUninitialize;