Do an OR in Switch-Case in C++

How would you do this in C++? For example I’m trying to trigger a program exit both if the user presses ESC or ‘q’ or ‘Q’.

I’ve tried looking for it, but I found no syntax for it in C++. I know how …

cannot add a reference .NET

I have a DLL which I would like to add as a reference to my project, but everytime I try to do it a dialog pops up telling me:
The reference could not be added. Please make sure that the file is …