I'm working on a gui using gtkmm and everything is working, but I get a warning that I can't figure out: ** (process:28120): WARNING **: 13:08:38.752: Can't set
I'm having trouble getting gtkmm-4.0 to work on Mac OS Monterey. Here is a simple C++ application that uses gtkmm4. // helloworld.cpp #include <gtkmm.h>