# GTK_FAQ.txt
# Huan Chen, 2/16/2017
# GTK FAQs

Some students searched for GTK examples on the web and copied and pasted the code from the browser to the terminal, met some errors:

# Error 1: 
the "GtkApplication" in the code cannot be recognized;

# Error 2:
---------------------
gcc -c simple.c `PKG_CONFIG_PATH=/usr/share/pkgconfig pkg-config --cflags gtk+-3.0` -g -o simple.o
Package gtk+-3.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gtk+-3.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gtk+-3.0' found
simple.c:10:21: error: gtk/gtk.h: No such file or directory
---------------------


Class "GtkApplication" is offered in GTK+3.0
https://people.gnome.org/~desrt/gtk/html/GtkApplication.html

The version of GTK library on our eecs server (http://newport.eecs.uci.edu/) is 2.0
# for example, check the gtk version on the "laguna" server
[huanc3@laguna ~/GTK_Example]$ pkg-config --modversion gtk+-2.0
2.24.23