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v1.3.2 | v1.3.1 | v1.3.0 | v1.1.10 | v1.0.11 | v1.3.x-r10392 | Subversion ]

Source Code

Developing new FTLK applications? Use 1.3.2, the first entry in the table below. The top entry will always be the lastest stable release.

Only old software should use 1.1.10, and only very old software uses 1.0.11. These older releases are end of life, and may not even compile on new platforms. Try to use 1.3; many older apps can use it with little or no change.

For more about fltk releases and development, see this article on fltk releases and the fltk roadmap.

- - -   Public Releases   - - -
Version Filename Size MD5 Sum
  1.3.2 fltk-1.3.2-source.tar.gz4162k9f7e707d4fb7a5a76f0f9b73ff70623d  
  1.3.1 fltk-1.3.1-source.tar.gz4158kb5b84ed63751ab3f76aa8d36cccf59e7  
  1.3.0 fltk-1.3.0-source.tar.gz4015k44d5d7ba06afdd36ea17da6b4b703ca3  
  1.1.10 fltk-1.1.10-source.tar.gz2606ke6378a76ca1ef073bcb092df1ef3ba55  
  1.0.11 fltk-1.0.11-source.tar.gz1125k4c4b7ade9fc3273496b6f1fe049c9796  
  - - -   Development Use   - - -  
  Version Filename Size MD5 Sum  
  1.3.x-r10392 fltk-1.3.x-r10392.tar.bz24094k51d64f02351c6751a2dc2c94f4e275c8  

NOTE: Dev snapshots of 2.x and 3.x have been disabled; use svn to access them.

The fltk developers voted to disable snapshots of 2.x and 3.x because app developers were still using them for production software, despite warnings, which is bad. Only the active release stream (1.3.x) has development snapshots now, to avoid confusion.

Subversion Access

The FLTK software is available to the public via Subversion. The current active development branch is FLTK-1.3. This can be checked out of Subversion using the following command:

    svn co fltk-1.3
..or browsed with this URL:

NOTE: If prompted for a username/password, just hit ENTER for both.

Due to the easysw server crash Apr 22 2013, if your svn commands are now hanging because svn is trying to access the old easysw server, use this fix provided by Albrecht which shows how to rewrite the svn URL after the move to

The previous experimental and now inactive branch is FLTK-2.0. If you really need access, you can check this out using:

    svn co fltk-2.0
..or browsed with this URL:

The newest development branch is FLTK-3.0. It is in pre-alpha stage, but already worth a look. Contributions are gladly accepted. FTLK 3.0 can be checked out of Subversion using the following command:

    svn co fltk-3.0
..or browsed with this URL:

For further explanation about the different versions of FLTK, see the article 'What are the Versions of FLTK?'.

Developers with write access must use https instead of http to commit changes. For more information on using Subversion, see the Subversion Quick-Start Guide page.


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