https://forum.qt.io/topic/20540/is-there-any-bettwer-way-than-systemproxyforquery-to-findout-is-system-behind-proxy
Is there any bettwer way than systemProxyForQuery() to findout is system behind proxy? | Qt Forum
Oct 12, 2012 - Hi Experts, I am using systemProxyForQuery() to identify if system is behind proxy but on windows it takes long long time. Is there any other way available t...