bho and vb.net

Is there any sample of a basic BHO program written in VB.NET?
Or can I start from a sample of a BHO written in C#.NET and get enought info 
to try a translation in VB.NET?

Thank you
-- 

This is what I was looking for and didn't find.
Thanks. 
-- 
bruno


"Walter Wang [MSFT]" wrote:

> Hi Bruno,
> 
> Based on my understanding, you want to find some BHO examples written in 
> VB.NET to get started in BHO programming.
> 
> I suggest you first to get familiar with BHO by reading following article:
> 
> #Browser Helper Objects: The Browser the Way You Want It
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwebgen/ht
> ml/bho.asp
> 
> 
> Indeed most of the examples found on the internet about BHO in managed code

> are written in C#, such as:
> 
> #AutoSig: A browser helper object that automatically adds a different 
> signature when you post a message to a CP forum - The Code Project - C# 
> Samples
> http://www.codeproject.com/cs/samples/autosig.asp
> 
> #IEAccessible Final Document
> http://slappy.cs.uiuc.edu/fall03/team2/Final/index.html
> 
> #Steven M. Cohn's WebLog : IE Browser Helper Objects
> http://weblogs.asp.net/stevencohn/articles/60948.aspx
> 
> 
> However, it shouldn't be too difficult to translate them to VB.NET, 
> especially there's not much code to make a basic BHO. You could use 
> Reflector to decompile the C# example's assembly and view them as VB.NET 
> code. You can find Reflector here:
> 
> http://www.aisto.com/roeder/dotnet/
> 
> 
> Hope this helps.
> 
> Sincerely,
> Walter Wang (wawang@online.microsoft.com, remove 'online.')
> Microsoft Online Community Support
> 
> ==================================================
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> http://msdn.microsoft.com/subscriptions/support/default.aspx.
> ==================================================
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> This posting is provided "AS IS" with no warranties, and confers
no rights. 
> 

Hi Bruno,

Based on my understanding, you want to find some BHO examples written in 
VB.NET to get started in BHO programming.

I suggest you first to get familiar with BHO by reading following article:

#Browser Helper Objects: The Browser the Way You Want It
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwebgen/ht
ml/bho.asp


Indeed most of the examples found on the internet about BHO in managed code 
are written in C#, such as:

#AutoSig: A browser helper object that automatically adds a different 
signature when you post a message to a CP forum - The Code Project - C# 
Samples
http://www.codeproject.com/cs/samples/autosig.asp

#IEAccessible Final Document
http://slappy.cs.uiuc.edu/fall03/team2/Final/index.html

#Steven M. Cohn's WebLog : IE Browser Helper Objects
http://weblogs.asp.net/stevencohn/articles/60948.aspx


However, it shouldn't be too difficult to translate them to VB.NET, 
especially there's not much code to make a basic BHO. You could use 
Reflector to decompile the C# example's assembly and view them as VB.NET 
code. You can find Reflector here:

http://www.aisto.com/roeder/dotnet/


Hope this helps.

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

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Get notification to my posts through email? Please refer to 
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check box "Tools/Options/Read: Get 300 headers at a time" to see your
reply 
promptly.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues 
where an initial response from the community or a Microsoft Support 
Engineer within 1 business day is acceptable. Please note that each follow 
up response may take approximately 2 business days as the support 
professional working with you may need further investigation to reach the 
most efficient resolution. The offering is not appropriate for situations 
that require urgent, real-time or phone-based interactions or complex 
project analysis and dump analysis issues. Issues of this nature are best 
handled working with a dedicated Microsoft Support Engineer by contacting 
Microsoft Customer Support Services (CSS) at 
http://msdn.microsoft.com/subscriptions/support/default.aspx.
==================================================

This posting is provided "AS IS" with no warranties, and confers no
rights. 

Hi Walter,
I started learning about BHO and began testing some programs of my own, 
without success.

Among different approach, I choose the one described in MSDN Thec Support 
http://support.microsoft.com/default.aspx/kb/194913/en-us that lets VB get 
reference to IUnknown**.  What I’m supposing to do is to define IUnknown and 
IObjectWithSite in an .odl file and get its .tlb file referenced in VB.NET.   
 

I’m using VS2005 and tried the sample found in that article (as it is, just 
IUnknown definition), but when I execute step 6 I get a message box in VB 
saying: “Impossible to add reference VBUnknown.tlb. Verify the file is 
accessible and the assembly and component is valid”. 

I'm not so expert in ODL compile and tryed many combination without success. 
Iunderstand there’s a compiler problem among the old mktyplib that I don’t 
have, Midl /mktyplib203, CreateTypeLib2 API. 

Can you give me some suggestions? 

Thanks 
 
bruno


"Walter Wang [MSFT]" wrote:

> Hi Bruno,
> 
> Based on my understanding, you want to find some BHO examples written in 
> VB.NET to get started in BHO programming.
> 
> I suggest you first to get familiar with BHO by reading following article:
> 
> #Browser Helper Objects: The Browser the Way You Want It
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwebgen/ht
> ml/bho.asp
> 
> 
> Indeed most of the examples found on the internet about BHO in managed code

> are written in C#, such as:
> 
> #AutoSig: A browser helper object that automatically adds a different 
> signature when you post a message to a CP forum - The Code Project - C# 
> Samples
> http://www.codeproject.com/cs/samples/autosig.asp
> 
> #IEAccessible Final Document
> http://slappy.cs.uiuc.edu/fall03/team2/Final/index.html
> 
> #Steven M. Cohn's WebLog : IE Browser Helper Objects
> http://weblogs.asp.net/stevencohn/articles/60948.aspx
> 
> 
> However, it shouldn't be too difficult to translate them to VB.NET, 
> especially there's not much code to make a basic BHO. You could use 
> Reflector to decompile the C# example's assembly and view them as VB.NET 
> code. You can find Reflector here:
> 
> http://www.aisto.com/roeder/dotnet/
> 
> 
> Hope this helps.
> 
> Sincerely,
> Walter Wang (wawang@online.microsoft.com, remove 'online.')
> Microsoft Online Community Support
> 
> ==================================================
> Get notification to my posts through email? Please refer to 
>
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
> ications. If you are using Outlook Express, please make sure you clear the

> check box "Tools/Options/Read: Get 300 headers at a time" to see
your reply 
> promptly.
> 
> Note: The MSDN Managed Newsgroup support offering is for non-urgent issues

> where an initial response from the community or a Microsoft Support 
> Engineer within 1 business day is acceptable. Please note that each follow

> up response may take approximately 2 business days as the support 
> professional working with you may need further investigation to reach the 
> most efficient resolution. The offering is not appropriate for situations 
> that require urgent, real-time or phone-based interactions or complex 
> project analysis and dump analysis issues. Issues of this nature are best 
> handled working with a dedicated Microsoft Support Engineer by contacting 
> Microsoft Customer Support Services (CSS) at 
> http://msdn.microsoft.com/subscriptions/support/default.aspx.
> ==================================================
> 
> This posting is provided "AS IS" with no warranties, and confers
no rights. 
> 

Hi Bruno,

I'm not quite sure about your question, please feel free to correct me if I 
misunderstood anything.

The KB you mentioned is VB or VBA specific, not VB.NET related. Besides, 
you don't need to declare IUnknown to create your BHO. The interface that a 
BHO must implemented is IObjectWithSite. 

Using the AutoSig example on codeproject I mentioned in my first reply, you 
could easily use Reflector to open the generated assembly and view VB.NET 
definition of the interface:

<ComVisible(True), Guid("FC4801A3-2BA9-11CF-A229-00AA003D7352"), 
InterfaceType(ComInterfaceType.InterfaceIsIUnknown)> _
Public Interface IObjectWithSite
      ' Methods
      <PreserveSig> _
      Function GetSite(ByRef guid As Guid, <Out> ByRef ppvSite As IntPtr)

As Integer
      <PreserveSig> _
      Function SetSite(<MarshalAs(UnmanagedType.IUnknown)> ByVal site As 
Object) As Integer
End Interface


Hope this helps.


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

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