How to get native windows decorations on GTK3 on Windows 7+ and MSYS2

Question

I am trying to port my application from linux to windows and I have a problem with theming. In linux this works out of a box, just compile it and application is using good theme

Answer 1

For people like me who use (activestate) perl, the /share and /etc need to be placed one directory above the perl.exe (say in C:\Perl64 if perl.exe is in C:\Perl64\bin).