private field 'm_dwCookie' is not used 'return' will never be executed result of comparison of unsigned enum expression < 0 is always false 'FlushDC' overrides a member function but is not marked 'override' potentially uninitialized local variable 'bound' used
		
			
				
	
	
		
			361 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			361 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/////////////////////////////////////////////////////////////////////////////
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// Name:        include/wx/msw/webview_ie.h
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// Purpose:     wxMSW IE wxWebView backend
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// Author:      Marianne Gagnon
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// Copyright:   (c) 2010 Marianne Gagnon, 2011 Steven Lamerton
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// Licence:     wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef wxWebViewIE_H
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#define wxWebViewIE_H
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#include "wx/setup.h"
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#if wxUSE_WEBVIEW && wxUSE_WEBVIEW_IE && defined(__WXMSW__)
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#include "wx/control.h"
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#include "wx/webview.h"
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#include "wx/msw/ole/automtn.h"
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#include "wx/msw/ole/activex.h"
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#include "wx/msw/ole/oleutils.h"
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#include "wx/msw/private/comptr.h"
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#include "wx/msw/wrapwin.h"
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#include "wx/msw/missing.h"
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#include "wx/msw/webview_missing.h"
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#include "wx/sharedptr.h"
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#include "wx/vector.h"
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#include "wx/msw/private.h"
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struct IHTMLDocument2;
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struct IHTMLElement;
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struct IMarkupPointer;
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class wxFSFile;
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class ClassFactory;
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class wxIEContainer;
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class DocHostUIHandler;
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class wxFindPointers;
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class wxIInternetProtocol;
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class WXDLLIMPEXP_WEBVIEW wxWebViewIE : public wxWebView
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{
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public:
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    wxWebViewIE() {}
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    wxWebViewIE(wxWindow* parent,
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           wxWindowID id,
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           const wxString& url = wxWebViewDefaultURLStr,
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           const wxPoint& pos = wxDefaultPosition,
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           const wxSize& size = wxDefaultSize,
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           long style = 0,
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           const wxString& name = wxWebViewNameStr)
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   {
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       Create(parent, id, url, pos, size, style, name);
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   }
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    ~wxWebViewIE();
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    bool Create(wxWindow* parent,
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           wxWindowID id,
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           const wxString& url = wxWebViewDefaultURLStr,
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           const wxPoint& pos = wxDefaultPosition,
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           const wxSize& size = wxDefaultSize,
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           long style = 0,
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           const wxString& name = wxWebViewNameStr) wxOVERRIDE;
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    virtual void LoadURL(const wxString& url) wxOVERRIDE;
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    virtual void LoadHistoryItem(wxSharedPtr<wxWebViewHistoryItem> item) wxOVERRIDE;
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    virtual wxVector<wxSharedPtr<wxWebViewHistoryItem> > GetBackwardHistory() wxOVERRIDE;
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    virtual wxVector<wxSharedPtr<wxWebViewHistoryItem> > GetForwardHistory() wxOVERRIDE;
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    virtual bool CanGoForward() const wxOVERRIDE;
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    virtual bool CanGoBack() const wxOVERRIDE;
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    virtual void GoBack() wxOVERRIDE;
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    virtual void GoForward() wxOVERRIDE;
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    virtual void ClearHistory() wxOVERRIDE;
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    virtual void EnableHistory(bool enable = true) wxOVERRIDE;
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    virtual void Stop() wxOVERRIDE;
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    virtual void Reload(wxWebViewReloadFlags flags = wxWEBVIEW_RELOAD_DEFAULT) wxOVERRIDE;
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    virtual wxString GetPageSource() const wxOVERRIDE;
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    virtual wxString GetPageText() const wxOVERRIDE;
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    virtual bool IsBusy() const wxOVERRIDE;
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    virtual wxString GetCurrentURL() const wxOVERRIDE;
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    virtual wxString GetCurrentTitle() const wxOVERRIDE;
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    virtual void SetZoomType(wxWebViewZoomType) wxOVERRIDE;
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    virtual wxWebViewZoomType GetZoomType() const wxOVERRIDE;
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    virtual bool CanSetZoomType(wxWebViewZoomType) const wxOVERRIDE;
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    virtual void Print() wxOVERRIDE;
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    virtual wxWebViewZoom GetZoom() const wxOVERRIDE;
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    virtual void SetZoom(wxWebViewZoom zoom) wxOVERRIDE;
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    //Clipboard functions
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    virtual bool CanCut() const wxOVERRIDE;
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    virtual bool CanCopy() const wxOVERRIDE;
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    virtual bool CanPaste() const wxOVERRIDE;
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    virtual void Cut() wxOVERRIDE;
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    virtual void Copy() wxOVERRIDE;
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    virtual void Paste() wxOVERRIDE;
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    //Undo / redo functionality
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    virtual bool CanUndo() const wxOVERRIDE;
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    virtual bool CanRedo() const wxOVERRIDE;
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    virtual void Undo() wxOVERRIDE;
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    virtual void Redo() wxOVERRIDE;
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    //Find function
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    virtual long Find(const wxString& text, int flags = wxWEBVIEW_FIND_DEFAULT) wxOVERRIDE;
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    //Editing functions
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    virtual void SetEditable(bool enable = true) wxOVERRIDE;
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    virtual bool IsEditable() const wxOVERRIDE;
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    //Selection
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    virtual void SelectAll() wxOVERRIDE;
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    virtual bool HasSelection() const wxOVERRIDE;
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    virtual void DeleteSelection() wxOVERRIDE;
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    virtual wxString GetSelectedText() const wxOVERRIDE;
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    virtual wxString GetSelectedSource() const wxOVERRIDE;
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    virtual void ClearSelection() wxOVERRIDE;
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    virtual bool RunScript(const wxString& javascript, wxString* output = NULL) wxOVERRIDE;
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    //Virtual Filesystem Support
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    virtual void RegisterHandler(wxSharedPtr<wxWebViewHandler> handler) wxOVERRIDE;
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    virtual void* GetNativeBackend() const wxOVERRIDE { return m_webBrowser; }
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    // ---- IE-specific methods
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    // FIXME: I seem to be able to access remote webpages even in offline mode...
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    bool IsOfflineMode();
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    void SetOfflineMode(bool offline);
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    wxWebViewZoom GetIETextZoom() const;
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    void SetIETextZoom(wxWebViewZoom level);
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    wxWebViewZoom GetIEOpticalZoom() const;
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    void SetIEOpticalZoom(wxWebViewZoom level);
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    void onActiveXEvent(wxActiveXEvent& evt);
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    void onEraseBg(wxEraseEvent&) {}
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    // Establish sufficiently modern emulation level for the browser control to
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    // allow RunScript() to return any kind of values.
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    static bool MSWSetModernEmulationLevel(bool modernLevel = true);
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    wxDECLARE_EVENT_TABLE();
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protected:
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    virtual void DoSetPage(const wxString& html, const wxString& baseUrl) wxOVERRIDE;
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private:
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    wxIEContainer* m_container;
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    wxAutomationObject m_ie;
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    IWebBrowser2* m_webBrowser;
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    wxCOMPtr<DocHostUIHandler> m_uiHandler;
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    //We store the current zoom type;
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    wxWebViewZoomType m_zoomType;
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    /** The "Busy" property of IWebBrowser2 does not always return busy when
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     *  we'd want it to; this variable may be set to true in cases where the
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     *  Busy property is false but should be true.
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     */
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    bool m_isBusy;
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    //We manage our own history, the history list contains the history items
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    //which are added as documentcomplete events arrive, unless we are loading
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    //an item from the history. The position is stored as an int, and reflects
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    //where we are in the history list.
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    wxVector<wxSharedPtr<wxWebViewHistoryItem> > m_historyList;
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    wxVector<ClassFactory*> m_factories;
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    int m_historyPosition;
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    bool m_historyLoadingFromList;
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    bool m_historyEnabled;
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    //We store find flag, results and position.
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    wxVector<wxFindPointers> m_findPointers;
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    int m_findFlags;
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    wxString m_findText;
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    int m_findPosition;
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    //Generic helper functions
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    bool CanExecCommand(wxString command) const;
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    void ExecCommand(wxString command);
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    wxCOMPtr<IHTMLDocument2> GetDocument() const;
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    bool IsElementVisible(wxCOMPtr<IHTMLElement> elm);
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    //Find helper functions.
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    void FindInternal(const wxString& text, int flags, int internal_flag);
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    long FindNext(int direction = 1);
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    void FindClear();
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    //Toggles control features see INTERNETFEATURELIST for values.
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    bool EnableControlFeature(long flag, bool enable = true);
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    wxDECLARE_DYNAMIC_CLASS(wxWebViewIE);
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};
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class WXDLLIMPEXP_WEBVIEW wxWebViewFactoryIE : public wxWebViewFactory
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{
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public:
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    virtual wxWebView* Create() wxOVERRIDE { return new wxWebViewIE; }
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    virtual wxWebView* Create(wxWindow* parent,
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                              wxWindowID id,
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                              const wxString& url = wxWebViewDefaultURLStr,
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                              const wxPoint& pos = wxDefaultPosition,
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                              const wxSize& size = wxDefaultSize,
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                              long style = 0,
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                              const wxString& name = wxWebViewNameStr) wxOVERRIDE
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    { return new wxWebViewIE(parent, id, url, pos, size, style, name); }
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};
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class VirtualProtocol : public wxIInternetProtocol
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{
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protected:
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    wxIInternetProtocolSink* m_protocolSink;
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    wxString m_html;
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    VOID * fileP;
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    wxFSFile* m_file;
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    wxSharedPtr<wxWebViewHandler> m_handler;
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public:
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    VirtualProtocol(wxSharedPtr<wxWebViewHandler> handler);
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    virtual ~VirtualProtocol() {}
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    //IUnknown
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    DECLARE_IUNKNOWN_METHODS;
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    //IInternetProtocolRoot
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    HRESULT STDMETHODCALLTYPE Abort(HRESULT WXUNUSED(hrReason),
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                                    DWORD WXUNUSED(dwOptions)) wxOVERRIDE
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                                   { return E_NOTIMPL; }
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    HRESULT STDMETHODCALLTYPE Continue(wxPROTOCOLDATA *WXUNUSED(pProtocolData)) wxOVERRIDE
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                                       { return S_OK; }
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    HRESULT STDMETHODCALLTYPE Resume() wxOVERRIDE { return S_OK; }
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    HRESULT STDMETHODCALLTYPE Start(LPCWSTR szUrl,
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                                    wxIInternetProtocolSink *pOIProtSink,
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                                    wxIInternetBindInfo *pOIBindInfo,
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                                    DWORD grfPI,
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                                    HANDLE_PTR dwReserved) wxOVERRIDE;
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    HRESULT STDMETHODCALLTYPE Suspend() wxOVERRIDE { return S_OK; }
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    HRESULT STDMETHODCALLTYPE Terminate(DWORD WXUNUSED(dwOptions)) wxOVERRIDE { return S_OK; }
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    //IInternetProtocol
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    HRESULT STDMETHODCALLTYPE LockRequest(DWORD WXUNUSED(dwOptions)) wxOVERRIDE
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                                          { return S_OK; }
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    HRESULT STDMETHODCALLTYPE Read(void *pv, ULONG cb, ULONG *pcbRead) wxOVERRIDE;
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    HRESULT STDMETHODCALLTYPE Seek(LARGE_INTEGER WXUNUSED(dlibMove),
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                                   DWORD WXUNUSED(dwOrigin),
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                                   ULARGE_INTEGER* WXUNUSED(plibNewPosition)) wxOVERRIDE
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                                   { return E_FAIL; }
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    HRESULT STDMETHODCALLTYPE UnlockRequest() wxOVERRIDE { return S_OK; }
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};
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class ClassFactory : public IClassFactory
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{
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public:
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    ClassFactory(wxSharedPtr<wxWebViewHandler> handler) : m_handler(handler)
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        { AddRef(); }
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    virtual ~ClassFactory() {}
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    wxString GetName() { return m_handler->GetName(); }
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    //IClassFactory
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    HRESULT STDMETHODCALLTYPE CreateInstance(IUnknown* pUnkOuter,
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                                             REFIID riid, void** ppvObject) wxOVERRIDE;
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    HRESULT STDMETHODCALLTYPE LockServer(BOOL fLock) wxOVERRIDE;
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    //IUnknown
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    DECLARE_IUNKNOWN_METHODS;
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private:
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    wxSharedPtr<wxWebViewHandler> m_handler;
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};
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class wxIEContainer : public wxActiveXContainer
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{
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public:
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    wxIEContainer(wxWindow *parent, REFIID iid, IUnknown *pUnk, DocHostUIHandler* uiHandler = NULL);
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    virtual ~wxIEContainer();
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    virtual bool QueryClientSiteInterface(REFIID iid, void **_interface, const char *&desc) wxOVERRIDE;
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private:
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    DocHostUIHandler* m_uiHandler;
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};
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class DocHostUIHandler : public wxIDocHostUIHandler
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{
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public:
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    DocHostUIHandler(wxWebView* browser) { m_browser = browser; }
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    virtual ~DocHostUIHandler() {}
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    virtual HRESULT wxSTDCALL ShowContextMenu(DWORD dwID, POINT *ppt,
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                                              IUnknown *pcmdtReserved,
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                                              IDispatch *pdispReserved) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL GetHostInfo(DOCHOSTUIINFO *pInfo) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL ShowUI(DWORD dwID,
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                                     IOleInPlaceActiveObject *pActiveObject,
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                                     IOleCommandTarget *pCommandTarget,
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                                     IOleInPlaceFrame *pFrame,
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                                     IOleInPlaceUIWindow *pDoc) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL HideUI(void) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL UpdateUI(void) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL EnableModeless(BOOL fEnable) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL OnDocWindowActivate(BOOL fActivate) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL OnFrameWindowActivate(BOOL fActivate) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL ResizeBorder(LPCRECT prcBorder,
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                                           IOleInPlaceUIWindow *pUIWindow,
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                                           BOOL fRameWindow) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL TranslateAccelerator(LPMSG lpMsg,
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                                                   const GUID *pguidCmdGroup,
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                                                   DWORD nCmdID) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL GetOptionKeyPath(LPOLESTR *pchKey,
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                                               DWORD dw) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL GetDropTarget(IDropTarget *pDropTarget,
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                                            IDropTarget **ppDropTarget) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL GetExternal(IDispatch **ppDispatch) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL TranslateUrl(DWORD dwTranslate,
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                                           OLECHAR *pchURLIn,
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                                           OLECHAR **ppchURLOut) wxOVERRIDE;
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    virtual HRESULT wxSTDCALL FilterDataObject(IDataObject *pDO,
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                                               IDataObject **ppDORet) wxOVERRIDE;
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    //IUnknown
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    DECLARE_IUNKNOWN_METHODS;
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private:
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    wxWebView* m_browser;
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};
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class wxFindPointers
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{
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public:
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    wxFindPointers(wxIMarkupPointer *ptrBegin, wxIMarkupPointer *ptrEnd)
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    {
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        begin = ptrBegin;
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        end = ptrEnd;
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    }
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    //The two markup pointers.
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    wxIMarkupPointer *begin, *end;
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};
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#endif // wxUSE_WEBVIEW && wxUSE_WEBVIEW_IE && defined(__WXMSW__)
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#endif // wxWebViewIE_H
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