qt socket

结果编译无法通过，错误信息：

D:/project/server/server.cpp:5: undefined reference to `_imp___ZN10QUdpSocketC1EP7QObject'
D:/project/server/server.cpp:5: undefined reference to `_imp___ZN10QUdpSocketC1EP7QObject'
:-1: error: collect2: ld returned 1 exit status

报错的代码就是
udpSocket = new QUdpSocket(this);

用的windows下的qt creator

确认pro文件中是否有这么一句
QT       += network