On Mon, Mar 16, 2015 at 12:32:44PM +0800, Ivan Tham wrote: > Thanks, I think I get the concept of what an -dev is. > > But what is a header file?
Short, very simplified answer: header files generally contain information needed to use an API, in this case X11 and Xinerama. For the long answer, you should probably learn C or C++. Eric
