I see 'G_BEGIN_DECLS' which is a miscellaneous macro :
https://developer.gnome.org/glib/2.33/glib-Miscellaneous-Macros.html#G-BEGIN-DECLS:CAPS

Is it used only for the files that are C based and compiled using a C++ compiler ?
What is its relevance with the given file ?
Thankyou for the help.

Arshdeep Singh
Third Year, Computer Engineering
Delhi Technological University
Ph: +91-9654115614
https://sites.google.com/site/adsingh1729/home