From neptune.cs.trinity.edu!ringer.cs.utsa.edu!swrinde!gatech!newsfeed.internetmci.com!uwm.edu!math.ohio-state.edu!jussieu.fr!news-rocq.inria.fr!news-sop.inria.fr!malibu.unice.fr!usenet Mon Jan 22 18:40:50 1996 Path: neptune.cs.trinity.edu!ringer.cs.utsa.edu!swrinde!gatech!newsfeed.internetmci.com!uwm.edu!math.ohio-state.edu!jussieu.fr!news-rocq.inria.fr!news-sop.inria.fr!malibu.unice.fr!usenet From: eg@kaolin.unice.fr (Erick Gallesio) Newsgroups: comp.lang.scheme,comp.lang.tcl Subject: [ANNOUNCE] STk 3.0 Release Date: 21 Jan 1996 22:22:54 GMT Organization: University of Nice Sophia-Antipolis Lines: 138 Message-ID: <4duebu$j6f@malibu.unice.fr> NNTP-Posting-Host: kaolin.unice.fr X-Newsreader: knews 0.9.4 Xref: neptune.cs.trinity.edu comp.lang.scheme:1204 comp.lang.tcl:6578 ANNOUNCING STk 3.0 ------------------ STk is a Scheme interpreter which can access to the Tk graphical package. Concretely it can be seen as the J. Ousterhout's Tk package where the Tcl language has been replaced by Scheme. STk also provides a full OO system, called STklos, which is close from CLOS or Dylan. Features of STk --------------- * interpreter is conform to R4RS * Clos/Dylan syntax like OO extension named STklos. STklos provides multiple inheritance, generic functions, multi methods, a meta object protocol. * Interpreter can be easily extended by adding new C modules. * All the commands defined by the Tk toolkit are available to the STk interpreter (Tk commands are seen as a special type of objects by the interpreter). * Callback are Scheme closures * supports Tk 4.0p2 * Don't use a Tcl interpreter for using Tk * Tk variables (such are -textvariable) are reflected back into Scheme as Scheme variables. * A set of STklos classes have been defined to manipulate Tk commands (menu, buttons, scales, canvas, canvas items) as STklos objects. * New widgets can easily be built in Scheme by composition of existing widgets. Distribution ------------ You can take a copy of STk at the following URL ftp://kaolin.unice.fr//pub/STk-3.0.tar.gz Documentation (and various papers) are available at ftp://kaolin.unice.fr//pub/STk-3.0-doc.tar.gz STk home page ------------- http://kaolin.unice.fr/html/STk.html Mailing list ------------ There is a mailing list for STk. To subscribe the mailing list just send a mail at stk-request@kaolin.unice.fr with the word "subscribe" in the "Subject:" line. Machines -------- STk runs on a wide range of machines/systems - Sparc (SunOs 4.1.x && Solaris 2.3) - Dec 5xxx (Ultrix 4.2) - SGI (IRIX 4.05, 5.1.1, 5.2) - DEC Alpha 3000/400 (OSF-1 V1.3) - RS6000 AIX 3.2.5 - HP 9000/735 (HP-UX 9.01) - PC (Linux 1.0) - PC (FreeBSD 1.1) - PC (SCO) - ... Difference from previous releases --------------------------------- Version 3.0 - Version of Tk is now at Tk4.0p2 level - Support Pixmap images - Strings can now contain null charters (printing of strings is more friendly now in write mode - Executable is now position independant(i.e. no path coded in hard in the interpreter). STK_LIBRARY shell variable is no more necessary. We can now make binary distributions. - Signal can now be redirected to Scheme closures. The end of a GC is seen as a signal. - Closures are fully supported by Tk. That means that a callback can be now a Scheme closure with its environment. GC problems with closures and usage of the dirty "address-of" are definitively gone. - HTML support (a browser is provided, should be extended to support all HTML2.0) - Documentation is now in HTML for the Tk commands (only a few commands are ready for now, but they will be all defined in a near future). - Support for synamic loading is now available on Sun (4 and 5), Linux (Elf and DLD), FreeBSD, OSF - .... Version 2.1 (june 1994) This is a major release version. - STklos (the object layer) is now written in C. It is more than 120 times faster than before and it uses less memory (~ 100)!!!! - Improvement of STklos - STklos classes have been written for all the Tk library widgets - Composites widgets can be easily defined in STklos. Access to those widgets is identical to C written one. - Hash tables have been added. - Small constants are coded on a pointer rather than a cell - Support for dynamic loading on SunOs (4 and 5). Dynamic loading uses shared objects (it should work also on OSF1) - Dump creates now smaller images. - Modification of configure and Makefiles to correct of a lot of installation problems. - Runs on Solaris 2.3 - Bugs corrections - Some modification to the error notifier - ... Version 2.0 (january 1994) This version contains a completely rewritten Scheme interpreter. This new interpreter is - R4RS - faster than previous release (~ 3 or 4 times) - less bugged (I hope :-) ) - implements integers (32 bits and bignum) and floats - cleaner with macros This version contains also a prototype of a graphical inspector which permits to see/modify a variable value. For widgets variables it permits to modify interactively their behaviour. Reporting bugs -------------- Please send comments, ideas, bug reports (or better: bug fixes) to stk-bugs@kaolin.unice.fr Enjoy.