I am trying to make use of BHO's (and no not to write spyware). It seems all
articles relate to C++, whereas my background si in VB.Net
I've managed to understand that I need the following i/face defined
<ComVisible(Tru e), InterfaceType(C omInterfaceType .InterfaceIsIUn known),
Guid("FC4801A3-2BA9-11CF-A229-00AA003D7352")> _
Public Interface IObjectWithSite
Sub SetSite(<Marsha lAs(UnmanagedTy pe.IUnknown)> ByVal pUnkSite As Object)
Sub GetSite(ByRef riid As Object, <MarshalAs(Unma nagedType.Inter face)> ByVal
ppvSite As Object)
End Interface
But
I have also added the registry entry using the GUID from the assembly.vb
file, but what escapes me is how to have the browser invoke the code so I
can step through / interrogate the value?
Does anyone have a real step by step guid to getting the basics to work
using VB.net? 2 2293 <ComVisible(Tr ue), InterfaceType(C omInterfaceType .InterfaceIsIUn known), Guid("FC4801 A3-2BA9-11CF-A229-00AA003D7352")> _
Public Interface IObjectWithSite
Sub SetSite(<Marsha lAs(UnmanagedTy pe.IUnknown)> ByVal pUnkSite As Object)
Sub GetSite(ByRef riid As Object, <MarshalAs(Unma nagedType.Inter face)> ByVal ppvSite As Object)
End Interface
You don't need to mark the interface as ComVisible, but you should use
the ComImport attribute.
The first parameter of GetSite should be a Guid, not an Object. The
second parameter should be passed ByRef.
I have also added the registry entry using the GUID from the assembly.vb file, but what escapes me is how to have the browser invoke the code so I can step through / interrogate the value?
I believe the object should be created and called whenever you open a
browser window. But of course, that only works if your interface
declaration is correct.
Mattias
--
Mattias Sjögren [MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.
Mattias, many thanks for the guidence.
Regards
"Mattias Sjögren" <ma************ ********@mvps.o rg> wrote in message
news:uf******** *****@TK2MSFTNG P14.phx.gbl... <ComVisible(Tr ue), InterfaceType(C omInterfaceType .InterfaceIsIUn known), Guid("FC4801 A3-2BA9-11CF-A229-00AA003D7352")> _
Public Interface IObjectWithSite
Sub SetSite(<Marsha lAs(UnmanagedTy pe.IUnknown)> ByVal pUnkSite As Object)
Sub GetSite(ByRef riid As Object, <MarshalAs(Unma nagedType.Inter face)>
ByValppvSite As Object)
End Interface
You don't need to mark the interface as ComVisible, but you should use the ComImport attribute.
The first parameter of GetSite should be a Guid, not an Object. The second parameter should be passed ByRef.
I have also added the registry entry using the GUID from the assembly.vb file, but what escapes me is how to have the browser invoke the code so I can step through / interrogate the value?
I believe the object should be created and called whenever you open a browser window. But of course, that only works if your interface declaration is correct. Mattias
-- Mattias Sjögren [MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com Please reply only to the newsgroup. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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I am trying to make use of BHO's (and no not to write spyware). It seems all
articles relate to C++, whereas my background si in VB.Net
I've managed to understand that I need the following i/face defined
<ComVisible(True), InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
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