ActiveX & IE interaction

18 Dec 2006 12:42 PM

Mercdev

I have an ActiveX control inherited from UserControl. This control is
hosted in IE(version 6 or later). How i can navigate IE from this control.
I know that i need to obtain IWebBrowser2 interface and work with it,
but i can't. Can someone show an example how to get IWebBroswer2 or way how
is possible navigate IE?

19 Dec 2006 3:55 AM

Walter Wang [MSFT]

Hi Mercdev,

Based on my understanding, you're writing an ActiveX Control using .NET
UserControl, and you want to navigate IE from this control.

As you've already known, to do this you need to obtain IWebBrowser2
interface first:

#How To Retrieve the Top-Level IWebBrowser2 Interface from an ActiveX
Control
http://support.microsoft.com/kb/257717/EN-US/

However, this doesn't work for .NET UserControl as described in following
KB:

#PRB: Cannot Retrieve Top-Level IWebBrowser2 Interface from a .NET
UserControl
http://support.microsoft.com/kb/311299/

We're sorry for any inconvenience.

Sincerely,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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19 Dec 2006 7:26 AM

Mercdev

Thanks, but I have read this articles before. And they were not helpfull.
I have managed wrapper for IWebBrowser2.
Maybe you can provide me with some sample code how to obtain any interface,
i tried as follow:

[Guid("6d5140c1-7436-11ce-8034-00aa006009fa"), ComImport,

InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]

interface IServiceProviderMy

{

IntPtr QueryService(

ref Guid guidService,

ref Guid riid,

out IntPtr pVoid);

}

class MyContorl : UserControl
{
....
    public MyContorl ()
    {
        ...
        IWebBrowser2 wb = this.GetService(typeof(IWebBrowser2)) as
IWebBrowser2;
        // also i've tried as:
        // IWebBrowser2 wb = this.Site.GetService(typeof(IWebBrowser2)) as
IWebBrowser2;
        // and
        // IServiceProviderMy wb =
this.GetService(typeof(IServiceProviderMy)) as IServiceProviderMy;

        ...
    }
....
}

All this ways didn't work.

19 Dec 2006 10:09 AM

Walter Wang [MSFT]

I'll do some research and get back to you later. Thank you for your
patience and understanding.

Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

==================================================
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that others may learn and benefit from your issue.
==================================================

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20 Dec 2006 9:32 AM

Walter Wang [MSFT]

Hi Mercdev,

To navigate IE from your control, you only need to obtain IWebBrowser
interface. (Let me know if you still want to get IWebBrowser2, it should be
similar)

public class SimpleControl : System.Windows.Forms.Control
{
public SimpleControl()

: base()

    {
        Button btn = new Button();
        btn.Parent = this;
        btn.Text = "Button1";
        btn.Location = new Point(10, 10);
        btn.Click += new EventHandler(Btn_OnClick);
        Controls.Add(btn);
    }

    //from shlguid.h
    Guid SID_STopLevelBrowser = new Guid(0x4C96BE40, 0x915C, 0x11CF, 0x99,
0xD3, 0x00, 0xAA, 0x00, 0x4A, 0xE8, 0x37);
    Guid SID_SWebBrowserApp = new Guid(0x0002DF05, 0x0000, 0x0000, 0xC0,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46);

    private void Btn_OnClick(object sender, EventArgs e)
    {
        Type typeIOleObject = this.GetType().GetInterface("IOleObject",
true);
        object oleClientSite = typeIOleObject.InvokeMember("GetClientSite",
            BindingFlags.Instance | BindingFlags.InvokeMethod |
BindingFlags.Public,
            null, this, null);

        IServiceProvider serviceProvider = oleClientSite as
IServiceProvider;
        Guid guidIServiceProvider = typeof(IServiceProvider).GUID;
        object objIServiceProvider;
        serviceProvider.QueryService(ref SID_STopLevelBrowser, ref
guidIServiceProvider, out objIServiceProvider);
        serviceProvider = objIServiceProvider as IServiceProvider;
        object objIWebBrowser;
        Guid guidIWebBrowser = typeof(IWebBrowser).GUID;
        serviceProvider.QueryService(ref SID_SWebBrowserApp, ref
guidIWebBrowser, out objIWebBrowser);
        IWebBrowser webBrowser = objIWebBrowser as IWebBrowser;
        MessageBox.Show(webBrowser.LocationURL);
        object flags = null;
        object targetFrameName = null;
        object postData = null;
        object headers = null;
        webBrowser.Navigate("about:blank", ref flags, ref targetFrameName,
ref postData, ref headers);
    }
}

[ComImport, Guid("6d5140c1-7436-11ce-8034-00aa006009fa"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IServiceProvider
{
    void QueryService(ref Guid guidService, ref Guid riid,
[MarshalAs(UnmanagedType.Interface)] out object ppvObject);
}

[ComImport, TypeLibType((short)0x1050),
Guid("EAB22AC1-30C1-11CF-A7EB-0000C05BAE0B")]
public interface IWebBrowser
{
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(100)]
    void GoBack();
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0x65)]
    void GoForward();
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0x66)]
    void GoHome();
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0x67)]
    void GoSearch();
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0x68)]
    void Navigate([In, MarshalAs(UnmanagedType.BStr)] string URL, [In,
Optional, MarshalAs(UnmanagedType.Struct)] ref object Flags, [In, Optional,
MarshalAs(UnmanagedType.Struct)] ref object TargetFrameName, [In, Optional,
MarshalAs(UnmanagedType.Struct)] ref object PostData, [In, Optional,
MarshalAs(UnmanagedType.Struct)] ref object Headers);
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(-550)]
    void Refresh();
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0x69)]
    void Refresh2([In, Optional, MarshalAs(UnmanagedType.Struct)] ref
object Level);
    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0x6a)]
    void Stop();
    [DispId(200)]
    object Application { [return: MarshalAs(UnmanagedType.IDispatch)]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(200)] get; }
    [DispId(0xc9)]
    object Parent { [return: MarshalAs(UnmanagedType.IDispatch)]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xc9)] get; }
    [DispId(0xca)]
    object Container { [return: MarshalAs(UnmanagedType.IDispatch)]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xca)] get; }
    [DispId(0xcb)]
    object Document { [return: MarshalAs(UnmanagedType.IDispatch)]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xcb)] get; }
    [DispId(0xcc)]
    bool TopLevelContainer { [MethodImpl(MethodImplOptions.InternalCall,
MethodCodeType = MethodCodeType.Runtime), DispId(0xcc)] get; }
    [DispId(0xcd)]
    string Type { [return: MarshalAs(UnmanagedType.BStr)]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xcd)] get; }
    [DispId(0xce)]
    int Left { [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xce)] get; [param: In]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xce)] set; }
    [DispId(0xcf)]
    int Top { [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xcf)] get; [param: In]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xcf)] set; }
    [DispId(0xd0)]
    int Width { [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType
= MethodCodeType.Runtime), DispId(0xd0)] get; [param: In]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xd0)] set; }
    [DispId(0xd1)]
    int Height { [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType
= MethodCodeType.Runtime), DispId(0xd1)] get; [param: In]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xd1)] set; }
    [DispId(210)]
    string LocationName { [return: MarshalAs(UnmanagedType.BStr)]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(210)] get; }
    [DispId(0xd3)]
    string LocationURL { [return: MarshalAs(UnmanagedType.BStr)]
[MethodImpl(MethodImplOptions.InternalCall, MethodCodeType =
MethodCodeType.Runtime), DispId(0xd3)] get; }
    [DispId(0xd4)]
    bool Busy { [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType
= MethodCodeType.Runtime), DispId(0xd4)] get; }
}

Summary:

1) Define IServiceProvider and IWebBrowser com interface in .NET
2) When the control is hosted in IE, first try to get the IOleObject
interface, then use reflection to call GetClientSite to get the
IServiceProvider interface.

This will require UnmanagedCode and Reflection permission set.

Let me know if this works for you.

Regards,
Walter Wang (waw***@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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that others may learn and benefit from your issue.
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21 Dec 2006 6:00 AM

Mercdev

Thank you, this is what we need!!