This software is licensed under:

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Intl.
			BY-NC-SA

http://creativecommons.org/licenses/by-nc-sa/4.0/

TargaImage.dll is licensed under CPOL:
http://www.codeproject.com/info/cpol10.aspx

(For developers)
Yes, you are allowed to decompile the program and use bits of the
code in one (or multiple) of your projects, but abide by the license and give
proper credit where necessary.