分享一下我老师大神的人工智能教程！零基础，通俗易懂！http://blog.csdn.net/jiangjunshow
也欢迎大家转载本篇文章。分享知识，造福人民，实现我们中华民族伟大复兴！
刚才遇到的这个问题，在网上搜索了一下，
有说之前的程序已经运行了，有说pro文件有问题的，
我找了一会，发现我在头文件中定义了两个slots，
在cPP文件中没有实现。
见nokia论坛
Another reason might be that your source is incomplete and calls method DECLARATIONS that get called but the method IMPLEMENTATIONS are missing.
Declaration is the stuff that you usually put in a header file (method signature without body)
Implementation is the signature with body.
Usually if you look in the linker output, you can find which implementation the linker is missing.
click the "Compile Output" view (Alt+4) to see more detailed info.
这样，我找到了这个低级错误~~~
给我老师的人工智能教程打call！http://blog.csdn.net/jiangjunshow
