Is my pattern good or bad?

[heatblazer]

Hello. I need a brief review from good and expirienced C++ programmer. Not in theory but in practice. I am using a pattern I came up with, which is like a lambda functions in C++ ( I know that there are already in new C++ ) but this was my approach, which helped me to solve a Qt program problem and saved me a lot of typing. This is the git link. I just need a fair opinion and advice. Thanks in advance.
P.S. I am new to C++

https://github.com/heatblazer/CallbacksInC-