[Ilugc] Open Hardware Needed
- From: prem@xxxxxxxxxxxxxxxx (Prem Kurian Philip)
- Date: Fri Mar 30 10:25:43 2007
Is there any online tutorial for Qt?
Try Trolltech's website.
http://www.trolltech.com/products/qt
You can try the documentation site:
http://doc.trolltech.com/4.2/
Talking about QT licenses, a lot of people don't seem to understand how it
works and so a small writeup is includede below. Admittedly this is some
what offtopic, but in a sense it does focus a bit on opensource
development.. so I state it here.
Here goes:
Please note that the QT license is different from most open source
licenses. Qt comes under a dual licensing policy. Qt Opensource licensing
is available free for opensource development, and Qt commercial licensing
is available for commercial development.
Important:
a) You cannot start developing your product using the QT Opensource
license and then make your product a proprietary product by purchasing a
QT Commercial license later on. Once you have developed code using QT Open
Source license, it will have to remain perpetually under that license.
b) If you decide to purchase QT Commercial license, it is sold per
*developer* and not per seat. That is to say, that if you have a single PC
on which QT is installed and if two people periodically use the same PC
for doing work on QT, you will need to purchase two licenses and not one.
c) Also, QT licenses cannot be transferred between developers more often
than once every 6 months (if I recall correctly). That is to say that if
"Ram" and "Ravi" are two developers for whom you have purchased QT
licenses, and if "Ram" goes on a holiday or leaves the company, you
cannot bring in a new person and have him use the same QT license -
actually, you can.. but you cannot do this more often than once every 6
months.
d) If you plan to develop across platforms - linux, windows etc, you will
need to buy QT licenses for each such platform.
Regards,
PK
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