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| library test_WB;
uses
SysUtils,
Dialogs,
Windows,
Classes,
ActiveX,
SHDocVw_TLB,
mshtml,
Forms;
type
TDummy = class
class procedure WebBrowser_OnNavigateComplete2(Sender: TObject; const pDisp: IDispatch; var URL: OleVariant); // pour WB_Create
class procedure DocumentOnClick();
end;
type
TEventObject = class(TInterfacedObject, IDispatch)
private
FOnEvent: TProcedure; // si ça existe c'est dans System.SysUtils !
protected
function GetTypeInfoCount(out Count: Integer): HResult; stdcall;
function GetTypeInfo(Index, LocaleID: Integer; out TypeInfo): HResult; stdcall;
function GetIDsOfNames(const IID: TGUID; Names: Pointer;
NameCount, LocaleID: Integer; DispIDs: Pointer): HResult; stdcall;
function Invoke(DispID: Integer; const IID: TGUID; LocaleID: Integer;
Flags: Word; var Params; VarResult, ExcepInfo, ArgErr: Pointer): HResult; stdcall;
public
constructor Create(const OnEvent: TProcedure);
property OnEvent: TProcedure read FOnEvent write FOnEvent;
end;
{ TEventObject }
constructor TEventObject.Create(const OnEvent: TProcedure);
begin
inherited Create;
FOnEvent := OnEvent;
end;
function TEventObject.GetIDsOfNames(const IID: TGUID; Names: Pointer;
NameCount, LocaleID: Integer; DispIDs: Pointer): HResult;
begin
Result := E_NOTIMPL;
end;
function TEventObject.GetTypeInfo(Index, LocaleID: Integer;
out TypeInfo): HResult;
begin
Result := E_NOTIMPL;
end;
function TEventObject.GetTypeInfoCount(out Count: Integer): HResult;
begin
Result := E_NOTIMPL;
end;
function TEventObject.Invoke(DispID: Integer; const IID: TGUID;
LocaleID: Integer; Flags: Word; var Params; VarResult, ExcepInfo,
ArgErr: Pointer): HResult;
begin
if (Dispid = DISPID_VALUE) then
begin
if Assigned(FOnEvent) then
FOnEvent;
Result := S_OK;
end
else Result := E_NOTIMPL;
end;
var
frm3DllForm: TForm;
WB: TWebBrowser;
{$R *.res}
// procédure pour une attente non bloquante de MSecs milli-secondes
procedure Delay(MSecs: Cardinal);
var
iStop : cardinal;
begin
iStop := GetTickCount + Msecs;
while GetTickCount < iStop do
begin
Application.ProcessMessages;
sleep(1);
end
end;
// procédure évènement OnClick d'un élément HTML quelconque
class procedure TDummy.DocumentOnClick();
begin
showmessage('Clic sur élément HTML');
end;
// procédure évènement de fin de chargement d'une form
class procedure TDummy.WebBrowser_OnNavigateComplete2(Sender: TObject; const pDisp: IDispatch; var URL: OleVariant);
begin
try
if ( (pDisp as IWebBrowser) = (Sender as TWebBrowser).DefaultInterface ) then (Sender as TWebBrowser).Tag := 0;
finally
end;
end;
// création dynamique d'un WB
function WBCreate(xhand: integer):integer; stdcall; export;
begin
try
// if not assigned(GetInfoParams) then GetInfoParams := TStringList.Create
// else GetInfoParams.Clear;
WB := TWebBrowser.Create(Frm3DllForm);
WB.ParentWindow := xhand;
WB.Resizable := true;
WB.Silent := true;
WB.OnNavigateComplete2 := TDummy.WebBrowser_OnNavigateComplete2;
WB.Tag := 0;
finally
end;
result := 0;
end;
// géométrie d'un WB
function WBLocate(xleft,xtop,xwidth,xheight: integer): integer; stdcall; export;
begin
try
WB.Top := xtop;
WB.Left := xleft;
WB.Width := xwidth;
WB.Height := xheight;
finally
end;
result := 0;
end;
// chargement d'une URL dans un WB
function WBUrl(xurl: pstring): integer; stdcall; export;
var
zurl: WideString;
begin
try
zurl := xurl^;
WB.Tag := 1;
WB.Navigate(zurl);
while WB.tag=1 do delay(100);
finally
end;
result := 0;
end;
// supprimer le WB
function WBDelete: integer; stdcall; export;
begin
try
WB.Free;
finally
end;
result := 0;
end;
// installation de l'évènement OnClick sur un élément HTML quelconque
function WBOnClick():integer; stdcall; export;
var
myDoc: IHTMLDocument2;
begin
myDoc := WB.Document as IHTMLDocument2;
myDoc.attachEvent('onclick', TEventObject.Create(DocumentOnClick) as IDispatch);
result := 0;
end;
exports
WBCreate,
WBLocate,
WBUrl,
WBOnClick,
WBDelete;
begin
end. |
