Macintosh Tcl/Tk 8.3.3 Binary Release Announcement
May 17, 2001

We are pleased to announce the availability of Macintosh binaries for the
recent 8.3.3 releases of the Tcl scripting language and the Tk toolkit This
is the third patch release of Tcl/Tk 8.3. More details can be found below.

An installer appropriate for most users is available for direct download at

For Tcl Developers, a more complete installer containing additional binaries,
CodeWarrior projects and complete sources is available at

For more information, please visit
* the Tcl project page on SourceForge
* the SourceForge Tcl Foundry
* the Tcl Developer Xchange:

Daniel A. Steffen


— Mac specific changes/fixes for Mac Tcl/Tk 8.3.3, May 4, 2001 —

* The following are the main mac specific changes since 8.3.2p1:
– use of DLLIMPORT and DLLEXPORT like on other platforms, no longer use
.exp files to determine what gets exported from DLLs, this also needs
the #defines BUILD_tcl, BUILD_tk & STATIC_BUILD to be setup properly,
– revised precompiled header handling: we now include a common header
file ‘MW_TclHeaderCommon.h’ from all .pch files, the .pch files
themselves now only setup #defines like in makefiles on other
– added support for -filetypes option to tk_getSaveFile (tcl bug #221636)
– added update event handling for background windows while in a
NavigationMgr dialog
– fixed crashing bug and memory leak in memory allocation code; modernized
memory allocation, now use temporary memory instead of system heap
when application heap is full and use RecoverHandle instead of memory
allocation tracking; increased fraction of application heap reserved
for OS routines to 512K.


— About Tcl/Tk —

Tool Command Language (Tcl) is an interpreted language and a very portable
interpreter for that language. Tcl is embeddable and extensible, and has
been used by companies and organizations world-wide since its creation in
1988 by John Ousterhout.

As a language, it is much like UNIX shell languages. There is very little
syntax and it is easy to learn. It is used to glue together building blocks
built in system programming languages like C, C++, and Java. These building
blocks appear as commands, or verbs, in the script language. It is easy to
embed Tcl into a legacy program so you can script the behavior of that
program and add in other building blocks like a GUI interface. The Tcl
interpreter is written in C and has been ported to almost every computer

Tk is a portable GUI toolkit for Tcl, it allows simple and dynamic creation
of graphical interfaces that run on Mac, Windows, UNIX and other platforms.

Check out the SourceForge Tcl Foundry:
An informal survey shows over 100 Tcl-related SourceForge projects

Please visit the Tcl Developer Xchange web site:


Tcl/Tk 8.3.3 Release Announcement
April 9, 2001

We are pleased to announce the 8.3.3 releases of the Tcl scripting language
and the Tk toolkit. This is the third patch release of Tcl/Tk 8.3. More
details can be found below. We’d like to thank all those that submit bugs
and patches as they are the primary source of information for us to
identify problems in the core.

Where to get the new releases:

Tcl/Tk 8.3.3 sources are freely available in from the Tcl Developer Xchange
web site at:

This web page also contains additional information about the releases,
including new features and notes about installing and compiling the
releases. Windows and Linux binaries are available from:

For additional information:

Please visit the Tcl Developer Xchange web site:

This site contains a variety of information about Tcl/Tk in general,
the core Tcl and Tk distributions, the TclPro tool suite, and much more.

Thank you for your contributions:
As usual, this release includes contributions from the Tcl community.
Tcl/Tk is maintained by the community, with the sources and bug
database at SourceForge:

Everyone is encouraged to participate in making Tcl an even better

Summary of Changes since Tcl/Tk 8.3.2:

The following were the main changes in Tcl/Tk 8.3.3. A complete list can
be found in the changes file at the root of the source tree. The more
complete ChangeLog is also included with each source release. This is a
patch release, so it primarily included bug fixes and corrections to
erratic behavior. Below are only the most notable changes.

1. Improved Mac build structure, build support for AIX-5 and Win64,
as well as improved build support for IRIX-5 and Mac OS X.

2. Fixed race condition in readability of socket on Windows.

3. Fixed handling of timeout for threads (corrects excessive CPU usage
issue for Tk on Unix in threaded Tcl environment).

4. Improved efficiency of [string split].

5. Corrected parsing of $tcl_libPath at startup and use of tclLibraryPath
in the threaded environment on Windows.

6. Enhanced handling of {!(boolean)} in expressions.

7. Corrected excessive mem use of info exists on a non-existent array

8. Corrected a memory leak in the channel code.

10. Added support for changing IME on the fly in Windows 2000

11. Added Windows icon support in [wm iconbitmap].

12. Corrected support for iso10646-1 fonts (unicode on X).

** Daniel A. Steffen **
** ( **