"Igor Tandetnik" <itandet***@mvps.org> wrote in message
news:O3nweRERGHA.5636@TK2MSFTNGP10.phx.gbl...
> "DavidB" <davidb@hurkle.nospam.com> wrote in message
> news:3adQf.2682$dy4.1626@news-server.bigpond.net.au
>> Trying to extend a 2.0 WebBrowser control using WebBrowserSite as per
>> docs. Tried implementing IDocHostUIHandler, IDocHostUIHandler2,
>> IInternetSecuritymanager, IServiceProvider.
>> The only methods which get called (so far) are
>> IDocHostUIHandler2.GetOverrideKeyPath() and
>> IServiceProvider.QueryService(). What do I have to do to get the
>> others to be called?
>
> If you managed to get IDocHostUIHandler2 called, then you should not have
> any difficulty with IDocHostUIHandler. Check your QueryInterface
> implementation, make sure you are actually answering positively to
> requests for this interface.
>
> IInternetSecurityManager is retrieved with IServiceProvider::QueryService
> call. You say QueryService does get called - so just implement it
> appropriately.
> --
> With best wishes,
>    Igor Tandetnik
>
> With sufficient thrust, pigs fly just fine. However, this is not
> necessarily a good idea. It is hard to be sure where they are going to
> land, and it could be dangerous sitting under them as they fly
> overhead. -- RFC 1925
>

"Igor Tandetnik" <itandet***@mvps.org> wrote in message
news:%239SBCvJRGHA.4452@TK2MSFTNGP12.phx.gbl...
> DavidB <davidb@hurkle.nospam.com> wrote:
>> No, that quite specifically isn't happening. Only one member of
>> IDocHostUIHandler2 gets called (the non-inherited member). Implement
>> IDocHostUIHandler in exactly the same way and nothing in it gets
>> called. Those interfaces do not get requested by
>> WebBrowserSite.QueryService().
>> I don't have or expect to have an implementation of QueryInterface. I
>> assume the CCW looks after that.
>
> I have no idea what CCW is.
>
>> I've got code for doing this in C++, and in C# with managed
>> axWebBrowser in Framework 1.1. I'm just trying to get WebBrowserSite
>> to do something useful in Framework 2.0.
>
> Ah. I don't use .NET and know very little about it. Sorry for wasting your
> time. Hopefully somebody more knowledgeable in .NET interop will pick up
> from here.
> --
> With best wishes,
>    Igor Tandetnik
>
> With sufficient thrust, pigs fly just fine. However, this is not
> necessarily a good idea. It is hard to be sure where they are going to
> land, and it could be dangerous sitting under them as they fly
> overhead. -- RFC 1925
>
>

>
> --
> Colin Neller
> http://www.colinneller.com/blog
>
>
>
> "Igor Tandetnik" <itandet***@mvps.org> wrote in message
> news:%239SBCvJRGHA.4452@TK2MSFTNGP12.phx.gbl...
>> DavidB <davidb@hurkle.nospam.com> wrote:
>>> No, that quite specifically isn't happening. Only one member of
>>> IDocHostUIHandler2 gets called (the non-inherited member). Implement
>>> IDocHostUIHandler in exactly the same way and nothing in it gets
>>> called. Those interfaces do not get requested by
>>> WebBrowserSite.QueryService().
>>> I don't have or expect to have an implementation of QueryInterface. I
>>> assume the CCW looks after that.
>>
>> I have no idea what CCW is.
>>
>>> I've got code for doing this in C++, and in C# with managed
>>> axWebBrowser in Framework 1.1. I'm just trying to get WebBrowserSite
>>> to do something useful in Framework 2.0.
>>
>> Ah. I don't use .NET and know very little about it. Sorry for wasting
>> your time. Hopefully somebody more knowledgeable in .NET interop will
>> pick up from here.
>> --
>> With best wishes,
>>    Igor Tandetnik
>>
>> With sufficient thrust, pigs fly just fine. However, this is not
>> necessarily a good idea. It is hard to be sure where they are going to
>> land, and it could be dangerous sitting under them as they fly
>> overhead. -- RFC 1925
>>
>>
>
>

"DavidB" <davidb@hurkle.nospam.com> wrote in message
news:bWzRf.6512$dy4.4965@news-server.bigpond.net.au...
>
> "Colin Neller" <cnel***@gmail.com> wrote in message
> news:eZRdMGrRGHA.5644@TK2MSFTNGP10.phx.gbl...
>> David,
>>
>> The CCW does take care of the QueryInterface call, but if your
>> IDocHostUIHandler is not getting called, I am suspicious of how you have
>> it defined.  Verify that the GUID attribute on the interface definition
>> is
>> correct and that the interface is COM visible.  If you like, post it here
>> and I'll take a look.
>
> The interface is as correct as I can get it. I tried emorcillo olelib,
> pinvoke.net and manual.
>
> The interface is implemented on class ExtWebBrowserSite :
> WebBrowser.WebBrowserSite, which is the way I read the docs. I assume this
> class cannot be made COM visible, since it inherits from a protected
> class,
> but doesn't need to be.
>
> I implemented IDocHostUIHandler, IDocHostUIHandler2 and IServiceProvider
> on
> this class (see code). Of these, only
> IDocHostUIHandler2.GetOverrideKeyPath
> and IServiceProvider.QueryService get called.
>
> IServiceProvider.QueryService gets called for many SIDs including
> ISecurityManager but not including IDocHostUIHandler or
> IDocHostUIHandler2.
> Without this, I don't see how I can implement IDocHostUIHandler on a
> different class.
>
> But there are probably many things I don't understand. Any help much
> appreciated. Sample code would be even better.
>
> [BTW thanks for the link on your blog. I've seen that C# code for
> NewWindow3
> mentioned before, but not been able to find it.]
>
> DavidB
>
> ------------ code starts here (long) -------------------
> using System;
> using System.Collections.Generic;
> using System.Text;
> using System.Windows.Forms;
> using System.Runtime.InteropServices;
> using System.Runtime.InteropServices.ComTypes;
> using System.Diagnostics;
>
> namespace WebGetWebControl {
>
>    /// <summary>
>    /// Implement class to extend the Web Browser
>    /// </summary>
>    public class ExtWebBrowser : WebBrowser
>    {
>
>        ////////////////////////////////////////////////////////////////
>        /// <summary>
>        /// Implement class that allows ActiveX control to retrieve
> extensibility interfaces
>        /// </summary>
>        class ExtWebBrowserSite : WebBrowser.WebBrowserSite
>                , olelib.IServiceProvider
>                , olelib.IDocHostUIHandler
>                , olelib.IDocHostUIHandler2
>        {
>            WebBrowser _host;
>            public ExtWebBrowserSite(WebBrowser host)
>                : base(host) {
>                _host = host;
>                Debug.WriteLine(String.Format("ExWBSite ctor {0}", host));
>            }
>
>            #region IDocHostUIHandler Members
>
>            void olelib.IDocHostUIHandler.EnableModeless(int fEnable) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 0));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            olelib.IDataObject
> olelib.IDocHostUIHandler.FilterDataObject(olelib.IDataObject pDO) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 1));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            olelib.IDropTarget
> olelib.IDocHostUIHandler.GetDropTarget(olelib.IDropTarget pDropTarget) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 2));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            object olelib.IDocHostUIHandler.GetExternal() {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 3));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.GetHostInfo(ref
> olelib.DOCHOSTUIINFO pInfo) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 4));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.GetOptionKeyPath(ref int
> pOLESTRchKey, int dw) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 5));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.HideUI() {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 6));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.OnDocWindowActivate(int
> fActivate)
> {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 7));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.OnFrameWindowActivate(int
> fActivate) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 8));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.ResizeBorder(ref olelib.RECT
> prcBorder, olelib.IOleInPlaceUIWindow pUIWindow, int fRameWindow) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}", 9));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void
> olelib.IDocHostUIHandler.ShowContextMenu(olelib.ContextMenuTarget
> dwContext,
> ref olelib.POINT pPOINT, olelib.IOleCommandTarget pCommandTarget, object
> HTMLTagElement) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}",
> 10));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.ShowUI(int dwID,
> olelib.IOleInPlaceActiveObject pActiveObject, olelib.IOleCommandTarget
> pCommandTarget, olelib.IOleInPlaceFrame pFrame, olelib.IOleInPlaceUIWindow
> pDoc) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}",
> 11));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.TranslateAccelerator(ref
> olelib.MSG lpmsg, ref olelib.UUID pguidCmdGroup, int nCmdID) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}",
> 12));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            int olelib.IDocHostUIHandler.TranslateUrl(int dwTranslate, int
> pchURLIn) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}",
> 13));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler.UpdateUI() {
>                Debug.WriteLine(String.Format("IDocHostUIHandler {0}",
> 14));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            #endregion
>
>            #region IDocHostUIHandler2 Members
>
>            void olelib.IDocHostUIHandler2.EnableModeless(int fEnable) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 0));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            olelib.IDataObject
> olelib.IDocHostUIHandler2.FilterDataObject(olelib.IDataObject pDO) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 1));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            olelib.IDropTarget
> olelib.IDocHostUIHandler2.GetDropTarget(olelib.IDropTarget pDropTarget) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 2));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            object olelib.IDocHostUIHandler2.GetExternal() {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 3));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.GetHostInfo(ref
> olelib.DOCHOSTUIINFO pInfo) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 4));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.GetOptionKeyPath(ref int
> pOLESTRchKey, int dw) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 5));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.GetOverrideKeyPath(ref int
> pchKey, int dw) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 6));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.HideUI() {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 7));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.OnDocWindowActivate(int
> fActivate) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 8));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.OnFrameWindowActivate(int
> fActivate) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 8));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.ResizeBorder(ref olelib.RECT
> prcBorder, olelib.IOleInPlaceUIWindow pUIWindow, int fRameWindow) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 8));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void
> olelib.IDocHostUIHandler2.ShowContextMenu(olelib.ContextMenuTarget
> dwContext, ref olelib.POINT pPOINT, olelib.IOleCommandTarget
> pCommandTarget,
> object HTMLTagElement) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 9));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.ShowUI(int dwID,
> olelib.IOleInPlaceActiveObject pActiveObject, olelib.IOleCommandTarget
> pCommandTarget, olelib.IOleInPlaceFrame pFrame, olelib.IOleInPlaceUIWindow
> pDoc) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 10));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.TranslateAccelerator(ref
> olelib.MSG lpmsg, ref olelib.UUID pguidCmdGroup, int nCmdID) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 11));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            int olelib.IDocHostUIHandler2.TranslateUrl(int dwTranslate, int
> pchURLIn) {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 12));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            void olelib.IDocHostUIHandler2.UpdateUI() {
>                Debug.WriteLine(String.Format("IDocHostUIHandler2 {0}",
> 13));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            #endregion
>
>            #region IServiceProvider Members
>
>            void olelib.IServiceProvider.QueryService(ref olelib.UUID
> guidService, ref olelib.UUID riid, IntPtr ppvObject) {
>                Debug.WriteLine(String.Format("IServiceProvider {0}",
> guidService));
>                throw new Exception("The method or operation is not
> implemented.");
>            }
>
>            #endregion
>        }
>
>        //--------------------------------------------------------------
>        // Override method to tell ActiveX host where to find extensibility
> interfaces
>        //
>        protected override WebBrowserSiteBase CreateWebBrowserSiteBase() {
>            return new ExtWebBrowserSite(this);
>        }
>
>        public void Test() {
>        }
>    }
> }
>
>
>
>>
>> --
>> Colin Neller
>> http://www.colinneller.com/blog
>>
>>
>>
>> "Igor Tandetnik" <itandet***@mvps.org> wrote in message
>> news:%239SBCvJRGHA.4452@TK2MSFTNGP12.phx.gbl...
>>> DavidB <davidb@hurkle.nospam.com> wrote:
>>>> No, that quite specifically isn't happening. Only one member of
>>>> IDocHostUIHandler2 gets called (the non-inherited member). Implement
>>>> IDocHostUIHandler in exactly the same way and nothing in it gets
>>>> called. Those interfaces do not get requested by
>>>> WebBrowserSite.QueryService().
>>>> I don't have or expect to have an implementation of QueryInterface. I
>>>> assume the CCW looks after that.
>>>
>>> I have no idea what CCW is.
>>>
>>>> I've got code for doing this in C++, and in C# with managed
>>>> axWebBrowser in Framework 1.1. I'm just trying to get WebBrowserSite
>>>> to do something useful in Framework 2.0.
>>>
>>> Ah. I don't use .NET and know very little about it. Sorry for wasting
>>> your time. Hopefully somebody more knowledgeable in .NET interop will
>>> pick up from here.
>>> --
>>> With best wishes,
>>>    Igor Tandetnik
>>>
>>> With sufficient thrust, pigs fly just fine. However, this is not
>>> necessarily a good idea. It is hard to be sure where they are going to
>>> land, and it could be dangerous sitting under them as they fly
>>> overhead. -- RFC 1925
>>>
>>>
>>
>>
>
>

"Colin Neller" <cnel***@gmail.com> wrote in message
news:e2%23kp9QSGHA.5108@TK2MSFTNGP09.phx.gbl...
>>> The _interface_ definition needs to be COM visible, not necessarily the
>>> class implementing it.  Please post your interface definition for
>>> IDocHostUIHandler.
>
>> I didn't know that. The documentation says [ComVisible] is true by
>> default; nothing I can find anywhere about making interfaces ComVisible;
>> I've implemented other classes and never found any use for [ComVisible].
>> How about that. Where do you put it?
>
> I am not absolutely sure about the COM visibility attribute, but it
> doesn't hurt.  Some examples I have seen have it defined explicitly.  You
> are correct that it is true by default (unless you have set it false at
> the assembly or super-class level), so I doubt it is the problem in your
> case.
>
> After having reviewed your interface, I noticed that the methods are
> defined in alphabetical order.  Since this is an IUnknown (not IDispatch)
> inteface, the order of the methods must be in the correct order for VTable
> lookup. Below is a definition that has the correct order, and I have used
> it successfully before (from
> http://www.codeproject.com/cs/miscctrl/WebBrowserEx.asp).  Also notice the
> ComImport attribute... honestly, I don't fully understand what it does
> (anyone else care to comment?), but it may be necessary.
>
> --- code ---
>
> [ComImport()]
> [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
> [GuidAttribute("bd3f23c0-d43e-11cf-893b-00aa00bdce1a")]
> internal interface IDocHostUIHandler
> {
>  [PreserveSig]
>  uint ShowContextMenu(uint dwID, ref tagPOINT ppt,
>   [MarshalAs(UnmanagedType.IUnknown)]  object pcmdtReserved,
>   [MarshalAs(UnmanagedType.IDispatch)] object pdispReserved);
>
>  void GetHostInfo(ref DOCHOSTUIINFO pInfo);
>  void ShowUI(uint dwID, ref object pActiveObject, ref object
> pCommandTarget, ref object pFrame, ref object pDoc);
>  void HideUI();
>  void UpdateUI();
>  void EnableModeless(int fEnable);
>  void OnDocWindowActivate(int fActivate);
>  void OnFrameWindowActivate(int fActivate);
>  void ResizeBorder(ref tagRECT prcBorder, int pUIWindow, int fRameWindow);
>
>  [PreserveSig]
>  uint TranslateAccelerator(ref tagMSG lpMsg, ref Guid pguidCmdGroup, uint
> nCmdID);
>
>  void GetOptionKeyPath([MarshalAs(UnmanagedType.BStr)] ref string pchKey,
> uint dw);
>  object GetDropTarget(ref object pDropTarget);
>
>  [PreserveSig]
>  int GetExternal([MarshalAs(UnmanagedType.IDispatch)] out object
> ppDispatch);
>
>  [PreserveSig]
>  uint TranslateUrl(uint dwTranslate,
>   [MarshalAs(UnmanagedType.BStr)] string pchURLIn,
>   [MarshalAs(UnmanagedType.BStr)] ref string ppchURLOut);
>
>  IDataObject FilterDataObject(IDataObject pDO);
> }
>

"DavidB" <davidb@hurkle.nospam.com> wrote in message
news:YOcTf.10406$dy4.8225@news-server.bigpond.net.au...
> Thanks, Collin.
>
> The (sorted) interface definition I gave you was generated by the COM
> import functionality. The real interface is defined in IDL, and does
> appear to be in the correct order. Even so, I tried your definition and it
> made no difference.
>
> Unless a Microsoftie is prepared to let us all into the secret, I'm going
> to have to write this one off as: Nice idea, no cigar.
>
> DavidB
>
> "Colin Neller" <cnel***@gmail.com> wrote in message
> news:e2%23kp9QSGHA.5108@TK2MSFTNGP09.phx.gbl...
>>>> The _interface_ definition needs to be COM visible, not necessarily the
>>>> class implementing it.  Please post your interface definition for
>>>> IDocHostUIHandler.
>>
>>> I didn't know that. The documentation says [ComVisible] is true by
>>> default; nothing I can find anywhere about making interfaces ComVisible;
>>> I've implemented other classes and never found any use for [ComVisible].
>>> How about that. Where do you put it?
>>
>> I am not absolutely sure about the COM visibility attribute, but it
>> doesn't hurt.  Some examples I have seen have it defined explicitly.  You
>> are correct that it is true by default (unless you have set it false at
>> the assembly or super-class level), so I doubt it is the problem in your
>> case.
>>
>> After having reviewed your interface, I noticed that the methods are
>> defined in alphabetical order.  Since this is an IUnknown (not IDispatch)
>> inteface, the order of the methods must be in the correct order for
>> VTable lookup. Below is a definition that has the correct order, and I
>> have used it successfully before (from
>> http://www.codeproject.com/cs/miscctrl/WebBrowserEx.asp).  Also notice
>> the ComImport attribute... honestly, I don't fully understand what it
>> does (anyone else care to comment?), but it may be necessary.
>>
>> --- code ---
>>
>> [ComImport()]
>> [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
>> [GuidAttribute("bd3f23c0-d43e-11cf-893b-00aa00bdce1a")]
>> internal interface IDocHostUIHandler
>> {
>>  [PreserveSig]
>>  uint ShowContextMenu(uint dwID, ref tagPOINT ppt,
>>   [MarshalAs(UnmanagedType.IUnknown)]  object pcmdtReserved,
>>   [MarshalAs(UnmanagedType.IDispatch)] object pdispReserved);
>>
>>  void GetHostInfo(ref DOCHOSTUIINFO pInfo);
>>  void ShowUI(uint dwID, ref object pActiveObject, ref object
>> pCommandTarget, ref object pFrame, ref object pDoc);
>>  void HideUI();
>>  void UpdateUI();
>>  void EnableModeless(int fEnable);
>>  void OnDocWindowActivate(int fActivate);
>>  void OnFrameWindowActivate(int fActivate);
>>  void ResizeBorder(ref tagRECT prcBorder, int pUIWindow, int
>> fRameWindow);
>>
>>  [PreserveSig]
>>  uint TranslateAccelerator(ref tagMSG lpMsg, ref Guid pguidCmdGroup, uint
>> nCmdID);
>>
>>  void GetOptionKeyPath([MarshalAs(UnmanagedType.BStr)] ref string pchKey,
>> uint dw);
>>  object GetDropTarget(ref object pDropTarget);
>>
>>  [PreserveSig]
>>  int GetExternal([MarshalAs(UnmanagedType.IDispatch)] out object
>> ppDispatch);
>>
>>  [PreserveSig]
>>  uint TranslateUrl(uint dwTranslate,
>>   [MarshalAs(UnmanagedType.BStr)] string pchURLIn,
>>   [MarshalAs(UnmanagedType.BStr)] ref string ppchURLOut);
>>
>>  IDataObject FilterDataObject(IDataObject pDO);
>> }
>>
>
>

news:1142571480.261451.302440@j52g2000cwj.googlegroups.com...
> Here is my (working) hint:
>
> 1.) Create an own class, derive that class solely from
> IDocHostUIHandler:
>
> private class MyDocHostUIHandler :
> UnsafeNativeMethods.IDocHostUIHandler
> {
> ...
> }
>
> 2.) introduce the interface definition of ICustomDoc. E.g. like the
> following:
>
> [ComImport(), InterfaceType( ComInterfaceType.InterfaceIsIUnknown ),
> GuidAttribute( "3050f3f0-98b5-11cf-bb82-00aa00bdce0b" )]
> internal interface ICustomDoc
> {
> [PreserveSig]
> void SetUIHandler( IDocHostUIHandler pUIHandler );
> }
>
> 3.) Call that interface's member:
>
> private MyDocHostUIHandler docHostUIHandler = null;
>
> protected override void OnDocumentCompleted(
> WebBrowserDocumentCompletedEventArgs e )
> {
> if ( docHostUIHandler == null )
> {
> docHostUIHandler = new MyDocHostUIHandler( this );
>
> ((ICustomDoc)Document.DomDocument).SetUIHandler(
> docHostUIHandler );
> }
>
> base.OnDocumentCompleted( e );
> }
>
> 4.) Be happy :-)
>
> Best regards
> Uwe (http://www.magerquark.com)
>