D-Bus equivalent for Windows

Choose your poison:

http://msdn.microsoft.com/en-us/library/aa365574%28VS.85%29.aspx

The following IPC mechanisms are
supported by Windows:

• Clipboard
• COM
• Data Copy
• DDE
• File Mapping
• Mailslots
• Pipes
• RPC
• Windows Sockets

The closest to DBus is COM.