错误提示：error LNK2019: unresolved external symbol WSAAsyncSelect referenced in function "public: void __cdecl QEventDispatcherWin32Private::doWsaAsyncSelect(int)" .
Solution：
add:
Imm32.lib;Winmm.lib;ws2_32.lib;to:
Properties->Linker -> Input -> Additional Dependencies.
save.
Qt64位编译时，public: void __cdecl QEventDispatcherWin32Private::doWsaAsyncSelect(int).