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# QWT License (and LGPL)

The pmchart and pmtime utilities makes extensive use of the Qt Widgets for Technical applications (QWT) library. QWT is Copyright (C) 1997 Josef Wilgen and Copyright (C) 2002 Uwe Rathman.

You may use, distribute and copy QWT under the terms of the QWT License version 1, which is displayed below.

                               Qwt License

                       Version 1.0, January 1, 2003

     The Qwt library and included programs are provided under the terms

     of the GNU LESSER GENERAL PUBLIC LICENSE (LGPL) with the following

     exceptions:

         1. Widgets that are subclassed from Qwt widgets do not

            constitute a derivative work.

         2. Static linking of applications and widgets to the

            Qwt library does not constitute a derivative work

            and does not require the author to provide source

            code for the application or widget, use the shared

            Qwt libraries, or link their applications or

            widgets against a user-supplied version of Qwt.

            If you link the application or widget to a modified

            version of Qwt, then the changes to Qwt must be

            provided under the terms of the LGPL in sections

            1, 2, and 4.

         3. You do not have to provide a copy of the Qwt license

            with programs that are linked to the Qwt library, nor

            do you have to identify the Qwt license in your

            program or documentation as required by section 6

            of the LGPL.

            However, programs must still identify their use of Qwt.

            The following example statement can be included in user

            documentation to satisfy this requirement:

                [program/widget] is based in part on the work of

                the Qwt project (http://qwt.sf.net).

     ----------------------------------------------------------------------

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