Apparently when I made Windows Pageant use the winselgui system, I
added the call that gets WSAAsyncSelect response messages sent to
Pageant's window, but I didn't add the switch case in the window
procedure that actually handles those responses. I suppose I didn't
notice at the time because no actual functionality used it - Pageant
has never yet dealt with any real (i.e. Winsock) sockets, only with
HANDLE-based named pipes, which are called 'sockets' in PuTTY's
abstraction, but not by Windows.
82971a3ebb