使用Qt编写程序访问知乎官网，程序报错
qt.network.ssl: QSslSocket: cannot call unresolved function SSLv23_client_method
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_CTX_new
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_library_init
qt.network.ssl: QSslSocket: cannot call unresolved function ERR_get_error
qt.network.ssl: QSslSocket: cannot call unresolved function ERR_get_error参考 https://blog.csdn.net/bladeandmaster88/article/details/52351339 解决方法如下：
G:\Qt5\Tools\mingw492_32\opt\bin目录下的ibeay32.dll和ssleay32.dll拷贝到
G:\Qt5\Tools\mingw492_32\bin目录下即可
注：G盘是Qt的安装目录
qt.network.ssl: QSslSocket: cannot call unresolved function SSLv23_client_method
原文：https://www.cnblogs.com/Manual-Linux/p/9688723.html