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POHow can I get IHtmlDocument2 in chrome browser?
 

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  1. POHow can I get IHtmlDocument2 in chrome browser?
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    <p>In Internet Explorer, I can use IHtmlDocument2 to get the html document.</p> <pre><code>function GetCurrentBrowserDOM: WideString; var hr: HRESULT; CurrentIE: IWebbrowser2; Wnd: HWND; WndChild:HWND; document: IDispatch; RootNode: IHTMLDocument2; innerHtml: WideString; begin Result := ''; Wnd := GetForegroundWindow; WndChild := FindWindowEx(Wnd, 0,'Frame Tab', nil); WndChild := FindWindowEx(WndChild, 0,'TabWindowClass', nil); WndChild := FindWindowEX(WndChild, 0, 'Shell DocObject View', nil); WndChild := FindWindowEX(WndChild, 0, 'Internet Explorer_Server', nil);//find Internet CoInitialize(nil); try hr := GetIEFromHWND(WndChild, CurrentIE); if hr = S_OK then begin document := CurrentIE.Document; document.QueryInterface(IID_IHTMLDocument2, RootNode); innerHtml := RootNode.body.innerHTML; end; finally CoUninitialize; end; end; function GetIEFromHWND(WHandle: HWND; var IE: IWebbrowser2): HRESULT; type TObjectFromLResult = function(LRESULT: LRESULT; const IID: TGUID; wParam: WPARAM; out PObject): HRESULT; stdcall; var hInst: HWND; lRes: Cardinal; MSG: Integer; pDoc: IHTMLDocument2; ObjectFromLresult: TObjectFromLresult; begin hInst := LoadLibrary('Oleacc.dll'); @ObjectFromLresult := GetProcAddress(hInst, 'ObjectFromLresult'); if @ObjectFromLresult &lt;&gt; nil then begin try MSG := RegisterWindowMessage('WM_HTML_GETOBJECT'); SendMessageTimeOut(WHandle, MSG, 0, 0, SMTO_ABORTIFHUNG, 1000, lRes); Result := ObjectFromLresult(lRes, IHTMLDocument2, 0, pDoc); Result := GetLastError; if Result = S_OK then (pDoc.parentWindow as IServiceprovider).QueryService(IWebbrowserApp, IWebbrowser2, IE); finally FreeLibrary(hInst); end; end; </code></pre> <p>I used spy++ to look for the chrome frame handle, and I found them.</p> <pre><code> Wnd := GetForegroundWindow; WndChild := FindWindowEx(Wnd, 0, 'Chrome_WidgetWin_0', nil); WndChild := FindWindowEx(WndChild, 0, 'Chrome_RenderWidgetHostHWND', nil); WndChild := FindWindowEx(WndChild, 0, 'CompositorHostWindowClass', nil); </code></pre> <p>But it can't catch the result in function called ObjectFromLresult.</p> <pre><code>ObjectFromLresult(lRes, IHTMLDocument2, 0, pDoc); </code></pre> <p>The error code I got was 127.</p> <p>Does it mean chrome browser not support this way to fetch its html document?</p> <p>If the answer is yes, is there another way to catch it?</p> <p>thanks a lot.</p> <p>PS: I have tried to use MSAA tree, but it didn't work too.(Can only fetch the title)</p>
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