How realistic is it to implement - "listen" to the memory buffer?

Question

C++ / C#

Hello. Tell me how difficult it is and whether it is actually possible to implement this. We copy everything to the memory buffer (Ctrl + C), from the buffer we extract only those data that contain the string AAA, then BBB ...

And, if it’s easier, that is, I copy the string in javascript 1 to a variable, copy string 2 to a variable, copy line 3 into a variable, then I transfer this data to my C# software.

Answer 1

You extract from the buffer everything that was copied there. But then you can use only what you need.

Answer 2

or as twobomb advises , use ready-made software like Clipdairy
... or write your own. does the C# tag hint that you want your creation?
google help c# how to track a clipboard
for example https://ru.stackoverflow.com/questions/589585/%D0%...