[Qt-interest] Is there something special needed for SSL on Windows?

[Nikos Chantziaras]

I tried to run a small SSL-using app on Windows (using Qt Designer on 
Windows 7 64-bit) but QSslSocket generates 
QAbstractSocket::UnknownSocketError errors.

It works fine in Linux.

Before I start looking into whether the problem lies with my code, are 
there known issues with Qt and SSL on Windows?  Do I need OpenSSL 
libaries/headers?  The program compiles fine though, no errors or 
warnings about not found libraries/headers.  It also is able to run OK 
(no errors about missing DLLs), except for SSL not working, of course.