1qwtlicense(3)                  Qwt User's Guide                  qwtlicense(3)
2
3
4

NAME

6       qwtlicense - .TH "qwtlicense" 3 "Mon Aug 1 2011" "Version 5.2.2" "Qwt
7       User's Guide"
8

NAME

10       qwtlicense - .PP
11                                    Qwt License
12                                  Version 1.0, January 1, 2003
13
14       The Qwt library and included programs are provided under the terms
15       of the GNU LESSER GENERAL PUBLIC LICENSE (LGPL) with the following
16       exceptions:
17
18           1. Widgets that are subclassed from Qwt widgets do not
19              constitute a derivative work.
20
21           2. Static linking of applications and widgets to the
22              Qwt library does not constitute a derivative work
23              and does not require the author to provide source
24              code for the application or widget, use the shared
25              Qwt libraries, or link their applications or
26              widgets against a user-supplied version of Qwt.
27
28              If you link the application or widget to a modified
29              version of Qwt, then the changes to Qwt must be
30              provided under the terms of the LGPL in sections
31              1, 2, and 4.
32
33           3. You do not have to provide a copy of the Qwt license
34              with programs that are linked to the Qwt library, nor
35              do you have to identify the Qwt license in your
36              program or documentation as required by section 6
37              of the LGPL.
38
39
40              However, programs must still identify their use of Qwt.
41              The following example statement can be included in user
42              documentation to satisfy this requirement:
43
44                  [program/widget] is based in part on the work of
45                  the Qwt project (http://qwt.sf.net).
46
47       ----------------------------------------------------------------------
48
49
50                 GNU LESSER GENERAL PUBLIC LICENSE
51                      Version 2.1, February 1999
52
53        Copyright (C) 1991, 1999 Free Software Foundation, Inc.
54            59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
55        Everyone is permitted to copy and distribute verbatim copies
56        of this license document, but changing it is not allowed.
57
58       [This is the first released version of the Lesser GPL.  It also counts
59        as the successor of the GNU Library Public License, version 2, hence
60        the version number 2.1.]
61
62                       Preamble
63
64         The licenses for most software are designed to take away your
65       freedom to share and change it.  By contrast, the GNU General Public
66       Licenses are intended to guarantee your freedom to share and change
67       free software--to make sure the software is free for all its users.
68
69         This license, the Lesser General Public License, applies to some
70       specially designated software packages--typically libraries--of the
71       Free Software Foundation and other authors who decide to use it.  You
72       can use it too, but we suggest you first think carefully about whether
73       this license or the ordinary General Public License is the better
74       strategy to use in any particular case, based on the explanations below.
75
76         When we speak of free software, we are referring to freedom of use,
77       not price.  Our General Public Licenses are designed to make sure that
78       you have the freedom to distribute copies of free software (and charge
79       for this service if you wish); that you receive source code or can get
80       it if you want it; that you can change the software and use pieces of
81       it in new free programs; and that you are informed that you can do
82       these things.
83
84         To protect your rights, we need to make restrictions that forbid
85       distributors to deny you these rights or to ask you to surrender these
86       rights.  These restrictions translate to certain responsibilities for
87       you if you distribute copies of the library or if you modify it.
88
89         For example, if you distribute copies of the library, whether gratis
90       or for a fee, you must give the recipients all the rights that we gave
91       you.  You must make sure that they, too, receive or can get the source
92       code.  If you link other code with the library, you must provide
93       complete object files to the recipients, so that they can relink them
94       with the library after making changes to the library and recompiling
95       it.  And you must show them these terms so they know their rights.
96
97         We protect your rights with a two-step method: (1) we copyright the
98       library, and (2) we offer you this license, which gives you legal
99       permission to copy, distribute and/or modify the library.
100
101         To protect each distributor, we want to make it very clear that
102       there is no warranty for the free library.  Also, if the library is
103       modified by someone else and passed on, the recipients should know
104       that what they have is not the original version, so that the original
105       author's reputation will not be affected by problems that might be
106       introduced by others.
107
108         Finally, software patents pose a constant threat to the existence of
109       any free program.  We wish to make sure that a company cannot
110       effectively restrict the users of a free program by obtaining a
111       restrictive license from a patent holder.  Therefore, we insist that
112       any patent license obtained for a version of the library must be
113       consistent with the full freedom of use specified in this license.
114
115         Most GNU software, including some libraries, is covered by the
116       ordinary GNU General Public License.  This license, the GNU Lesser
117       General Public License, applies to certain designated libraries, and
118       is quite different from the ordinary General Public License.  We use
119       this license for certain libraries in order to permit linking those
120       libraries into non-free programs.
121
122         When a program is linked with a library, whether statically or using
123       a shared library, the combination of the two is legally speaking a
124       combined work, a derivative of the original library.  The ordinary
125       General Public License therefore permits such linking only if the
126       entire combination fits its criteria of freedom.  The Lesser General
127       Public License permits more lax criteria for linking other code with
128       the library.
129
130         We call this license the 'Lesser' General Public License because it
131       does Less to protect the user's freedom than the ordinary General
132       Public License.  It also provides other free software developers Less
133       of an advantage over competing non-free programs.  These disadvantages
134       are the reason we use the ordinary General Public License for many
135       libraries.  However, the Lesser license provides advantages in certain
136       special circumstances.
137
138         For example, on rare occasions, there may be a special need to
139       encourage the widest possible use of a certain library, so that it becomes
140       a de-facto standard.  To achieve this, non-free programs must be
141       allowed to use the library.  A more frequent case is that a free
142       library does the same job as widely used non-free libraries.  In this
143       case, there is little to gain by limiting the free library to free
144       software only, so we use the Lesser General Public License.
145
146         In other cases, permission to use a particular library in non-free
147       programs enables a greater number of people to use a large body of
148       free software.  For example, permission to use the GNU C Library in
149       non-free programs enables many more people to use the whole GNU
150       operating system, as well as its variant, the GNU/Linux operating
151       system.
152
153         Although the Lesser General Public License is Less protective of the
154       users' freedom, it does ensure that the user of a program that is
155       linked with the Library has the freedom and the wherewithal to run
156       that program using a modified version of the Library.
157
158         The precise terms and conditions for copying, distribution and
159       modification follow.  Pay close attention to the difference between a
160       former contains code derived from the library, whereas the latter must
161       be combined with the library in order to run.
162
163                 GNU LESSER GENERAL PUBLIC LICENSE
164          TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
165
166         0. This License Agreement applies to any software library or other
167       program which contains a notice placed by the copyright holder or
168       other authorized party saying it may be distributed under the terms of
169       this Lesser General Public License (also called 'this License').
170       Each licensee is addressed as 'you'.
171
172         A 'library' means a collection of software functions and/or data
173       prepared so as to be conveniently linked with application programs
174       (which use some of those functions and data) to form executables.
175
176         The 'Library', below, refers to any such software library or work
177       which has been distributed under these terms.  A 'work based on the
178       Library' means either the Library or any derivative work under
179       copyright law: that is to say, a work containing the Library or a
180       portion of it, either verbatim or with modifications and/or translated
181       straightforwardly into another language.  (Hereinafter, translation is
182       included without limitation in the term 'modification'.)
183
184         'Source code' for a work means the preferred form of the work for
185       making modifications to it.  For a library, complete source code means
186       all the source code for all modules it contains, plus any associated
187       interface definition files, plus the scripts used to control compilation
188       and installation of the library.
189
190         Activities other than copying, distribution and modification are not
191       covered by this License; they are outside its scope.  The act of
192       running a program using the Library is not restricted, and output from
193       such a program is covered only if its contents constitute a work based
194       on the Library (independent of the use of the Library in a tool for
195       writing it).  Whether that is true depends on what the Library does
196       and what the program that uses the Library does.
197
198         1. You may copy and distribute verbatim copies of the Library's
199       complete source code as you receive it, in any medium, provided that
200       you conspicuously and appropriately publish on each copy an
201       appropriate copyright notice and disclaimer of warranty; keep intact
202       all the notices that refer to this License and to the absence of any
203       warranty; and distribute a copy of this License along with the
204       Library.
205
206         You may charge a fee for the physical act of transferring a copy,
207       and you may at your option offer warranty protection in exchange for a
208       fee.
209
210         2. You may modify your copy or copies of the Library or any portion
211       of it, thus forming a work based on the Library, and copy and
212       distribute such modifications or work under the terms of Section 1
213       above, provided that you also meet all of these conditions:
214
215           a) The modified work must itself be a software library.
216
217           b) You must cause the files modified to carry prominent notices
218           stating that you changed the files and the date of any change.
219
220           c) You must cause the whole of the work to be licensed at no
221           charge to all third parties under the terms of this License.
222
223           d) If a facility in the modified Library refers to a function or a
224           table of data to be supplied by an application program that uses
225           the facility, other than as an argument passed when the facility
226           is invoked, then you must make a good faith effort to ensure that,
227           in the event an application does not supply such function or
228           table, the facility still operates, and performs whatever part of
229           its purpose remains meaningful.
230
231           (For example, a function in a library to compute square roots has
232           a purpose that is entirely well-defined independent of the
233           application.  Therefore, Subsection 2d requires that any
234           application-supplied function or table used by this function must
235           be optional: if the application does not supply it, the square
236           root function must still compute square roots.)
237
238       These requirements apply to the modified work as a whole.  If
239       identifiable sections of that work are not derived from the Library,
240       and can be reasonably considered independent and separate works in
241       themselves, then this License, and its terms, do not apply to those
242       sections when you distribute them as separate works.  But when you
243       distribute the same sections as part of a whole which is a work based
244       on the Library, the distribution of the whole must be on the terms of
245       this License, whose permissions for other licensees extend to the
246       entire whole, and thus to each and every part regardless of who wrote
247       it.
248
249       Thus, it is not the intent of this section to claim rights or contest
250       your rights to work written entirely by you; rather, the intent is to
251       exercise the right to control the distribution of derivative or
252       collective works based on the Library.
253
254       In addition, mere aggregation of another work not based on the Library
255       with the Library (or with a work based on the Library) on a volume of
256       a storage or distribution medium does not bring the other work under
257       the scope of this License.
258
259         3. You may opt to apply the terms of the ordinary GNU General Public
260       License instead of this License to a given copy of the Library.  To do
261       this, you must alter all the notices that refer to this License, so
262       that they refer to the ordinary GNU General Public License, version 2,
263       instead of to this License.  (If a newer version than version 2 of the
264       ordinary GNU General Public License has appeared, then you can specify
265       that version instead if you wish.)  Do not make any other change in
266       these notices.
267
268         Once this change is made in a given copy, it is irreversible for
269       that copy, so the ordinary GNU General Public License applies to all
270       subsequent copies and derivative works made from that copy.
271
272         This option is useful when you wish to copy part of the code of
273       the Library into a program that is not a library.
274
275         4. You may copy and distribute the Library (or a portion or
276       derivative of it, under Section 2) in object code or executable form
277       under the terms of Sections 1 and 2 above provided that you accompany
278       it with the complete corresponding machine-readable source code, which
279       must be distributed under the terms of Sections 1 and 2 above on a
280       medium customarily used for software interchange.
281
282         If distribution of object code is made by offering access to copy
283       from a designated place, then offering equivalent access to copy the
284       source code from the same place satisfies the requirement to
285       distribute the source code, even though third parties are not
286       compelled to copy the source along with the object code.
287
288         5. A program that contains no derivative of any portion of the
289       Library, but is designed to work with the Library by being compiled or
290       linked with it, is called a 'work that uses the Library'.  Such a
291       work, in isolation, is not a derivative work of the Library, and
292       therefore falls outside the scope of this License.
293
294         However, linking a 'work that uses the Library' with the Library
295       creates an executable that is a derivative of the Library (because it
296       contains portions of the Library), rather than a 'work that uses the
297       library'.  The executable is therefore covered by this License.
298       Section 6 states terms for distribution of such executables.
299
300         When a 'work that uses the Library' uses material from a header file
301       that is part of the Library, the object code for the work may be a
302       derivative work of the Library even though the source code is not.
303       Whether this is true is especially significant if the work can be
304       linked without the Library, or if the work is itself a library.  The
305       threshold for this to be true is not precisely defined by law.
306
307         If such an object file uses only numerical parameters, data
308       structure layouts and accessors, and small macros and small inline
309       functions (ten lines or less in length), then the use of the object
310       file is unrestricted, regardless of whether it is legally a derivative
311       work.  (Executables containing this object code plus portions of the
312       Library will still fall under Section 6.)
313
314         Otherwise, if the work is a derivative of the Library, you may
315       distribute the object code for the work under the terms of Section 6.
316       Any executables containing that work also fall under Section 6,
317       whether or not they are linked directly with the Library itself.
318
319         6. As an exception to the Sections above, you may also combine or
320       link a 'work that uses the Library' with the Library to produce a
321       work containing portions of the Library, and distribute that work
322       under terms of your choice, provided that the terms permit
323       modification of the work for the customer's own use and reverse
324       engineering for debugging such modifications.
325
326         You must give prominent notice with each copy of the work that the
327       Library is used in it and that the Library and its use are covered by
328       this License.  You must supply a copy of this License.  If the work
329       during execution displays copyright notices, you must include the
330       copyright notice for the Library among them, as well as a reference
331       directing the user to the copy of this License.  Also, you must do one
332       of these things:
333
334           a) Accompany the work with the complete corresponding
335           machine-readable source code for the Library including whatever
336           changes were used in the work (which must be distributed under
337           Sections 1 and 2 above); and, if the work is an executable linked
338           with the Library, with the complete machine-readable 'work that
339           uses the Library', as object code and/or source code, so that the
340           user can modify the Library and then relink to produce a modified
341           executable containing the modified Library.  (It is understood
342           that the user who changes the contents of definitions files in the
343           Library will not necessarily be able to recompile the application
344           to use the modified definitions.)
345
346           b) Use a suitable shared library mechanism for linking with the
347           Library.  A suitable mechanism is one that (1) uses at run time a
348           copy of the library already present on the user's computer system,
349           rather than copying library functions into the executable, and (2)
350           will operate properly with a modified version of the library, if
351           the user installs one, as long as the modified version is
352           interface-compatible with the version that the work was made with.
353
354           c) Accompany the work with a written offer, valid for at
355           least three years, to give the same user the materials
356           specified in Subsection 6a, above, for a charge no more
357           than the cost of performing this distribution.
358
359           d) If distribution of the work is made by offering access to copy
360           from a designated place, offer equivalent access to copy the above
361           specified materials from the same place.
362
363           e) Verify that the user has already received a copy of these
364           materials or that you have already sent this user a copy.
365
366         For an executable, the required form of the 'work that uses the
367       Library' must include any data and utility programs needed for
368       reproducing the executable from it.  However, as a special exception,
369       the materials to be distributed need not include anything that is
370       normally distributed (in either source or binary form) with the major
371       components (compiler, kernel, and so on) of the operating system on
372       which the executable runs, unless that component itself accompanies
373       the executable.
374
375         It may happen that this requirement contradicts the license
376       restrictions of other proprietary libraries that do not normally
377       accompany the operating system.  Such a contradiction means you cannot
378       use both them and the Library together in an executable that you
379       distribute.
380
381         7. You may place library facilities that are a work based on the
382       Library side-by-side in a single library together with other library
383       facilities not covered by this License, and distribute such a combined
384       library, provided that the separate distribution of the work based on
385       the Library and of the other library facilities is otherwise
386       permitted, and provided that you do these two things:
387
388           a) Accompany the combined library with a copy of the same work
389           based on the Library, uncombined with any other library
390           facilities.  This must be distributed under the terms of the
391           Sections above.
392
393           b) Give prominent notice with the combined library of the fact
394           that part of it is a work based on the Library, and explaining
395           where to find the accompanying uncombined form of the same work.
396
397         8. You may not copy, modify, sublicense, link with, or distribute
398       the Library except as expressly provided under this License.  Any
399       attempt otherwise to copy, modify, sublicense, link with, or
400       distribute the Library is void, and will automatically terminate your
401       rights under this License.  However, parties who have received copies,
402       or rights, from you under this License will not have their licenses
403       terminated so long as such parties remain in full compliance.
404
405         9. You are not required to accept this License, since you have not
406       signed it.  However, nothing else grants you permission to modify or
407       distribute the Library or its derivative works.  These actions are
408       prohibited by law if you do not accept this License.  Therefore, by
409       modifying or distributing the Library (or any work based on the
410       Library), you indicate your acceptance of this License to do so, and
411       all its terms and conditions for copying, distributing or modifying
412       the Library or works based on it.
413
414         10. Each time you redistribute the Library (or any work based on the
415       Library), the recipient automatically receives a license from the
416       original licensor to copy, distribute, link with or modify the Library
417       subject to these terms and conditions.  You may not impose any further
418       restrictions on the recipients' exercise of the rights granted herein.
419       You are not responsible for enforcing compliance by third parties with
420       this License.
421
422         11. If, as a consequence of a court judgment or allegation of patent
423       infringement or for any other reason (not limited to patent issues),
424       conditions are imposed on you (whether by court order, agreement or
425       otherwise) that contradict the conditions of this License, they do not
426       excuse you from the conditions of this License.  If you cannot
427       distribute so as to satisfy simultaneously your obligations under this
428       License and any other pertinent obligations, then as a consequence you
429       may not distribute the Library at all.  For example, if a patent
430       license would not permit royalty-free redistribution of the Library by
431       all those who receive copies directly or indirectly through you, then
432       the only way you could satisfy both it and this License would be to
433       refrain entirely from distribution of the Library.
434
435       If any portion of this section is held invalid or unenforceable under any
436       particular circumstance, the balance of the section is intended to apply,
437       and the section as a whole is intended to apply in other circumstances.
438
439       It is not the purpose of this section to induce you to infringe any
440       patents or other property right claims or to contest validity of any
441       such claims; this section has the sole purpose of protecting the
442       integrity of the free software distribution system which is
443       implemented by public license practices.  Many people have made
444       generous contributions to the wide range of software distributed
445       through that system in reliance on consistent application of that
446       system; it is up to the author/donor to decide if he or she is willing
447       to distribute software through any other system and a licensee cannot
448       impose that choice.
449
450       This section is intended to make thoroughly clear what is believed to
451       be a consequence of the rest of this License.
452
453         12. If the distribution and/or use of the Library is restricted in
454       certain countries either by patents or by copyrighted interfaces, the
455       original copyright holder who places the Library under this License may add
456       an explicit geographical distribution limitation excluding those countries,
457       so that distribution is permitted only in or among countries not thus
458       excluded.  In such case, this License incorporates the limitation as if
459       written in the body of this License.
460
461         13. The Free Software Foundation may publish revised and/or new
462       versions of the Lesser General Public License from time to time.
463       Such new versions will be similar in spirit to the present version,
464       but may differ in detail to address new problems or concerns.
465
466       Each version is given a distinguishing version number.  If the Library
467       specifies a version number of this License which applies to it and
468       conditions either of that version or of any later version published by
469       the Free Software Foundation.  If the Library does not specify a
470       license version number, you may choose any version ever published by
471       the Free Software Foundation.
472
473         14. If you wish to incorporate parts of the Library into other free
474       programs whose distribution conditions are incompatible with these,
475       write to the author to ask for permission.  For software which is
476       copyrighted by the Free Software Foundation, write to the Free
477       Software Foundation; we sometimes make exceptions for this.  Our
478       decision will be guided by the two goals of preserving the free status
479       of all derivatives of our free software and of promoting the sharing
480       and reuse of software generally.
481
482                       NO WARRANTY
483
484         15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
485       WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
486       EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
487       OTHER PARTIES PROVIDE THE LIBRARY 'AS IS' WITHOUT WARRANTY OF ANY
488       KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
489       IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
490       PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
491       LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
492       THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
493
494         16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
495       WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
496       AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
497       FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
498       CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
499       LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
500       RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
501       FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
502       SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
503       DAMAGES.
504
505                    END OF TERMS AND CONDITIONS
506
507                  How to Apply These Terms to Your New Libraries
508
509         If you develop a new library, and you want it to be of the greatest
510       possible use to the public, we recommend making it free software that
511       everyone can redistribute and change.  You can do so by permitting
512       redistribution under these terms (or, alternatively, under the terms of the
513       ordinary General Public License).
514
515         To apply these terms, attach the following notices to the library.  It is
516       safest to attach them to the start of each source file to most effectively
517       convey the exclusion of warranty; and each file should have at least the
518
519           <one line to give the library's name and a brief idea of what it does.>
520           Copyright (C) <year>  <name of author>
521
522           This library is free software; you can redistribute it and/or
523           modify it under the terms of the GNU Lesser General Public
524           License as published by the Free Software Foundation; either
525           version 2.1 of the License, or (at your option) any later version.
526
527           This library is distributed in the hope that it will be useful,
528           but WITHOUT ANY WARRANTY; without even the implied warranty of
529           MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
530           Lesser General Public License for more details.
531
532           You should have received a copy of the GNU Lesser General Public
533           License along with this library; if not, write to the Free Software
534           Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
535
536       Also add information on how to contact you by electronic and paper mail.
537
538       You should also get your employer (if you work as a programmer) or your
539       school, if any, to sign a 'copyright disclaimer' for the library, if
540       necessary.  Here is a sample; alter the names:
541
542         Yoyodyne, Inc., hereby disclaims all copyright interest in the
543         library `Frob' (a library for tweaking knobs) written by James Random Hacker.
544
545         <signature of Ty Coon>, 1 April 1990
546         Ty Coon, President of Vice
547
548       That's all there is to it!
549
550
551
552Version 5.2.2                   Mon Aug 1 2011                   qwtlicense(3)
Impressum