Fetching Value from UI of UDO while making DLL

Hi Experts,

I am working on a UDO. To add some custom functionalities I have to make a DLL of that . Now the problem is that I don't have any idea to use the value in UI edit text fields in UDO to perform other functionalities using the C++ code of UDO .How can I get the value of some edit text in UDO using C++ .

I have gone through UDO DLL(1)  answer by Yatsea Li  but in there it uses value from data base but I want it from UI . 

Thanks in Advance .

Regards,

Mayank Sharma