You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
2.5 KiB
76 lines
2.5 KiB
15 years ago
|
<chapter id="licensing">
|
||
|
|
<title>&Qt; and Licensing questions</title>
|
||
|
|
|
||
|
|
<qandaset>
|
||
|
|
|
||
|
|
<qandaentry>
|
||
|
|
<question id="qt">
|
||
|
|
<para>What is &Qt;, by the way?</para>
|
||
|
|
</question>
|
||
|
|
<answer>
|
||
|
|
<para>&Qt; is a C++-based class library to build user interfaces. It
|
||
|
|
also includes many utility classes like string classes and classes
|
||
|
|
to handle input and output. It
|
||
|
|
provides most of the widgets you will see in a &kde; application:
|
||
|
|
menus, buttons, sliders, &etc;. &Qt; is a cross-platform library that
|
||
|
|
allows you to write code that will compile on &UNIX; systems as well as
|
||
|
|
&Windows; and embedded devices. You can learn more about &Qt; at <ulink
|
||
|
|
url="http://www.trolltech.com">http://www.trolltech.com</ulink>.</para>
|
||
|
|
</answer>
|
||
|
|
</qandaentry>
|
||
|
|
|
||
|
|
<qandaentry>
|
||
|
|
<question>
|
||
|
|
<para>Why does &kde; use &Qt;?</para>
|
||
|
|
</question>
|
||
|
|
<answer>
|
||
|
|
<para>&Qt; is a very sophisticated toolkit that provides everything that
|
||
|
|
is needed to build a modern user interface. &Qt; is written in C++, thus
|
||
|
|
allowing object-oriented development which ensures efficiency and
|
||
|
|
code reuse in a project the size and scope of &kde;. In our opinion
|
||
|
|
there is no better toolkit available for &UNIX; systems and that it
|
||
|
|
would have been a grave mistake to try to build &kde; on anything but
|
||
|
|
the best.</para>
|
||
|
|
</answer>
|
||
|
|
</qandaentry>
|
||
|
|
|
||
|
|
<qandaentry>
|
||
|
|
<question>
|
||
|
|
<para>Why does &kde; not use gtk, xforms, xlib, whatever?</para>
|
||
|
|
</question>
|
||
|
|
<answer>
|
||
|
|
<para>There are a number of toolkits available. To provide a
|
||
|
|
consistent user interface and to keep used resources such as memory to
|
||
|
|
a minimum, &kde; can use only one of them. &Qt; was selected for the
|
||
|
|
reasons mentioned above.</para>
|
||
|
|
</answer>
|
||
|
|
</qandaentry>
|
||
|
|
|
||
|
|
<qandaentry>
|
||
|
|
<question>
|
||
|
|
<para>But &Qt; isn't free, is it?</para>
|
||
|
|
</question>
|
||
|
|
<answer>
|
||
|
|
<para>It is! As of September 4, 2000, version 2.2 of the &Qt;
|
||
|
|
libraries were licensed under the <acronym>GPL</acronym>, thereby
|
||
|
|
fulfiling all aspects of <quote>free software</quote>.</para>
|
||
|
|
</answer>
|
||
|
|
</qandaentry>
|
||
|
|
|
||
|
|
<qandaentry>
|
||
|
|
<question>
|
||
|
|
<para>Can I write commercial software for &kde;?</para>
|
||
|
|
</question>
|
||
|
|
<answer>
|
||
|
|
<para>You can use the &kde; libraries to write <quote>commercial and
|
||
|
|
closed source</quote> as well as <quote>commercial and open
|
||
|
|
source</quote> software. If you write open source software you can
|
||
|
|
use the &Qt; free edition. But if you write closed source software
|
||
|
|
you may not use the &Qt; free edition; you need to obtain the &Qt;
|
||
|
|
professional edition from Troll Tech. </para> <para>If you want more
|
||
|
|
information, please contact <ulink
|
||
|
|
url="http://www.trolltech.com">Troll Tech</ulink> directly.</para>
|
||
|
|
</answer>
|
||
|
|
</qandaentry>
|
||
|
|
</qandaset>
|
||
|
|
</chapter>
|