Messenger Add-In SDK Where?

To get a build of Messenger that supports add-ins, go here: http://www.ideas.live.com/programPage.aspx?versionId=0eccd94b-eb48-497c-8e60-c6313f7ebb73

Then you'll need to either install the SDK (coming soon), or set the following registry key:

HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger\AddInFeatureEnabled DWORD 1

And finally, you can follow these steps to create your own add-in in C# using Vistual Studio:

1. Launch VS 2005 and choose File->New Project
   1. Choose a Visual C# Class Library

   2. Name your solution whatever you'd like. I've chosen 'SmartTalker'.

2. Go to Project->Add Reference
   1. In the dialog that pops up, choose the 'Browse' tab.

   2. Navigate to C:\Program Files\MSN Messenger and choose 'MessengerClient.dll'

3. Add 'using Microsoft.Messenger' statement to your Class1.cs file.

4. Create a class that inherits from IMessengerAddIn. I've chosen to name the class 'AddIn'.

5. Navigate to Project->SmartTalker Properties
   1. Modify

      the assembly name to be the fully qualified name of the class that

      implements IMessengerAddIn. In my case, I'd change this to

      'SmartTalker.AddIn'.

6. Once

   you've created your add-in .dll, you can load it into Messenger by

   going to Tools->Options and selecting the 'Add-in' page.

7. Finally, you can turn on/off your selected 'Agent' add-in manually via the status menu on Messenger's main window.

So AFAIK the SDK is included in the new messenger live

atoast at 2007-8-30 >

That is the place also on msdn

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnlive/html/messengeraddin_sdk.asp

And a video with the devs on it.

http://channel9.msdn.com/tags/Windows+Live+Messenger

jbaker_ms at 2007-8-30 >