> Please note, I am currently moving from Windows to Ubuntu and am new to
> many protocols.I notice from the main websites that there are various
> versions and their weekly snapshots (1.3.x ??).

Yup - many versions. 1.3.x is the current stable tree, 1.1 is the old stable, 
2.x is an experimental branch (now largely deprecated) and fltk-3 is the 
current experimental branch.

You want 1.3.something....

> I dont know what STR means

Software Trouble Report, though we use it for feature requests as well as bug 
reports... Try:

http://www.fltk.org/str.php 

> but I would OFFER to implement
> "Add background colors to Fl_Text_Display" myself.
> To me HOW this is done will affect which version it should be integrated
> into. Ubuntu Software Centre automatically downloaded and installed V1.3
> for me.What is the install technique for snapshots?
> Is all source code given? Is it protected? I assume it is well make'd.
> What is a .tar.gz,a .tar.bz2? What is a diff?

There's a howto here:

http://www.fltk.org/articles.php?L598


That describes using the mingw tools to unpack a tarball on Windows and 
building fltk-1.1.7 (yup, it is old...) but the process is identical for any 
posix-like host (linux, osx, etc.) so the steps should help you get going.

The only extra step for the weeklies is that theu may not have been 
"autoconf'd" whereas a "relases" tarball would be. So, once you unroll the 
tarball and "cd" into the build dir, run:

 autoconf

just the one time to make sure the autoconf is done, then proceed with the 
configure stage as normal.

Note that on any non-Windows host it is safe to assume that the image libs are 
all available directly from the system, so you can leave off all the 
--enable-local-whatever options and it should Just Work.

Though, that said, current Ubuntu distros leave out all the dev packages so you 
probably need to make sure they are all installed or the build will not work. 
This is a Royal Pain, but that's what they opted for, who am I to argue with 
Canonical...?

Once the configure ; make sequence is done, cd into the tests folder and type

  ./demo

and see what flies.

Do not bother with the make install phase, fltk works well from the build tree 
and it avoids any issues with trashing any system hosted variants...
 
> Who decides whether I can do this and how should I proceed?

It's open source. Go for it, then let us know!




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