默认的情况下Delphi的TwebBrowser控件是不支持Enter的,这使一些多行文本框变得无法录入,解决的办法如下:
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;
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