// https://stackoverflow.com/questions/54365212/gtk2-vs-gtk3-detect-gtk3-theme-in-bash-script/54384946#54384946 #include #include int main() { gchar *prop; gtk_init(0, 0); g_object_get(gtk_settings_get_default(), "gtk-theme-name", &prop, 0); return !printf("%s\n", prop); }