Qt Widgets for Technical Applications
The Qwt library contains GUI Components and utility classes which are primarily
useful for programs with a technical background.
Besides a 2D plot widget it provides scales, sliders, dials, compasses,
thermometers, wheels and knobs to control or display values, arrays
or ranges of type double.
The Qwt Widget Library
Qwt is an extension to the Qt GUI library from Troll Tech AS.
The Qwt library contains widgets and components which are
primarily useful for technical and scientifical purposes.
It includes a 2-D plotting widget, different kinds of sliders,
and much more.
Qwt is hosted at http://qwt.sf.net
1) Several compiler incompatibilities fixed
2) DBL_EPSILON removed
Using DBL_EPSILON in the calculations of the dials/sliders and the
scale engines leads to problems with the inaccuracy of floating points.
The behaviour has been reverted to 5.0.x.
Pointless private declarat
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
1. Widgets that are subclassed from Qwt widgets do not
constitute a derivative work.
2. Static linking of applications and widgets to the
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