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Frequently Asked Questions
Please note: the latest version of this and other FAQ lists are available at:
http://www.troll.no/faq/
1.Who is Troll Tech?
Troll Tech is a software company based in Oslo, the capital of
Norway. Our flagship product is Qt, the multi-platform C++
GUI toolkit.
Troll Tech AS was founded in 1994. However, the core team of
designers at Troll Tech started developing Qt already in 1992.
Ever since then, Qt has steadily expanded and improved. Qt is
currently used in hundreds of software development projects
world wide.
In addition to Qt development and support, Troll Tech
engages on a consultancy basis in a large-scale software
development project. The project, which naturally is based on
Qt, is run by the Norwegian division of NCR (previously
AT&T).
2.Do you have any plans for a graphical designer/dialog
builder?
We are working on one now. There will be further
announcements on qt-interest and, as appropriate,
qt-announce.
You may want to look at the free Qt GUI designers QtEZ and
Qt Architect; please see links on www.troll.no/qtprogs.html.
3.Is there a mailing list or something for Qt?
There are two: qt-interest@troll.no and qt-announce.
Qt-interest is a user forum. There can be as much as 20
messages per week. To join it, send a message containing the
single word "subscribe" to qt-interest-request@troll.no.
Qt-announce is for announcements of new Qt versions and a
few other announcements. We expect that there will be less
than ten messages to the list each year. To join the list, send
mail containing the single word "subscribe" to
qt-announce-request@troll.no.
All messages to Qt-announce are also sent to Qt-interest, so
you don't need to be on both lists.
4.Can I use Qt's classes without writing a graphical
user interface?
Quite a few of the classes can be used independently of the
user interface. See utility classes, for example. There are also
a few classes that will work without the GUI only by chance.
5.What kind of licenses exist for Qt?
The Qt toolkit is available under two different licenses: The
Professional Edition for commercial use, and the Free Edition
for developing free software for the X platform.
6.What are the differences between the Professional
Edition and Free Edition of Qt?
You can write commercial software only if you have the
Professional Edition. The library itself is the same. With the
Professional Edition, you also get technical support and
upgrades.
7.Are you going to include so-and-so feature in Qt? If
so, when?
We try not to make public speculations about the whats and
whens of the next Qt release too early, because we do not want
to be known as a vaporware company.
8.I don't want to give away my source code. What do I
do?
Then you need the Professional Edition.
9.Can I charge for my application?
If you have the Professional Edition: Yes, of course. If you use
the Free Edition your software must be freely distributable
and you must include the source.
The Free Edition is intended for free software. We realize
that CD-ROMs cost money to produce, for example, so you
can charge a copying fee.
10.Where can I find Qt?
The latest version of Qt can be downloaded from
http://www.troll.no or from ftp.troll.no, and a whole range of
ftp mirror sites around the world. Look for a mirror near you
on the list available under http://www.troll.no/dl/
We encourage all developers of free Qt software to upload
their work to ftp.troll.no.
11.I want to port Qt to a new platform. What do I do?
If the new platform is POSIX-like and runs the X Window
System, it's simple. Read the file PORTING for details.
12.Will Qt be available for [OS/2, Mac, Amiga]?
At present, Qt only works well on X11 and Win32 (Windows
95 and Windows NT). Porting to other platforms is a lower
priority. Currently, we concentrate on the Windows and X
versions.
13.Can I make a Qt shared library and distribute it with
my Linux distribution?
Yes, if you do not make changes to Qt and include all the files
present in our distribution of Qt. If you absolutely need to
change something, write to info@troll.no.
It is very important for Troll Tech that we know what is being
distributed, so that we can guarantee the quality of Qt.
14.I found this obscure bug and I need it fixed, fast!
Qt Professional Edition includes technical support. We try to
support the developers using the Qt Free Edition as well, and
we take all bug reports seriously, no matter who they come
from. But, of course, when there's too much to do, our
customers have higher priority.
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