What is QT

nicksmart234 · 09-28-2004, 09:40 PM

wut is QT?

Tinkster · 09-28-2004, 09:57 PM

That's smsish for cutee :}

J/K ... http://www.trolltech.com/products/qt/index.html

It's a C++ framework for cross-platform
application development.

Cheers,
Tink

bahramH · 09-29-2004, 06:29 AM

If you want to develop programs with windows and buttons you can push on and menus on them, and ...
and if you want to be able to port it on Linux/MSWindows/... by just recompiling the source code with no modifs, then that's QT. It is not opensource, and you better read the license term. Basically, if you don't intend to sell your application, it is free.

The other way of developping GUI programs in Linux is GTK. I don't know if it is portable to windows. Gimp is written with that (GTK means in fact Gimp Tool Kit).

finally, you have Tcl/TK, a high level multiplatform scripting language to do the same thing.

There are many other way of writing GUI, but I know less about them.

qwijibow · 09-29-2004, 06:53 AM

You say QT i not open source ?

Most linux distributions have it and claim to be completely made or open osurce software.
im my system (gentoo) i compiled QT myself... i have the source code.

QT DOES have 2 different licences,... a commervial ane, and a free one.

whats the difference between the Free QT licence and the open source licence ???

Both release source code, and both can be used provided you keep your own source open.

whatever differences there are, they must be pretty subtle.

bahramH · 09-29-2004, 07:00 AM

What I understood is that if you *sell* your application, you have to pay them a fee.

vharishankar · 09-29-2004, 07:15 AM

I think QT GUI toolkit has been released under two licenses. One for commerical and another for open source. I believe that if you want to make money out of your programs which you develop with QT, then you'll have to pay for the commercial license.

qwijibow · 09-29-2004, 02:27 PM

so QT *IS* open source... (for us linux users and open source developers anyways)

Tinkster · 09-29-2004, 02:41 PM

Why don't you just READ IT ?

Discussing this here seems rather futile ;)

Cheers,
Tink

nicksmart234 · 09-29-2004, 08:18 PM

well the reson i asked is becuase im trying to install teh new version of kopete so when i run ./configure at the very end it says
Checking for Qt...configure:error:Qt (>= Qt 3.2) (headers and libraries) not found please check your installation!
For more details about this problem, look at the end of config.log.

Well heres the problem i installed qt and its in the file where the previous version was and i tryed again... same response also i cant access the config.log it says access denied and i am root
so wut should i do???

Tinkster · 09-29-2004, 09:00 PM

Quote:

Originally posted by nicksmart234
Well heres the problem i installed qt and its in the file where the previous version was and i tryed again... same response also i cant access the config.log it says access denied and i am root
so wut should i do???

Rephrase that in English?

Quote:

Well heres the problem i installed qt

Which version, how did you install?

Quote:

and its in the file where the previous version was

Rephrase? This doesn't make sense.

Cheers,
Tink

qwijibow · 09-30-2004, 04:54 AM

i assume you installed qt some binary way.. (RPM / Debian package / SuSE package)
these install methods ONLY install the precompiled binaries.... not the source code.

since you have now switched install methods to compile from source... you need qts source.
basically, you need to install the qt-devel package (or uninstall qt, and compile from source)

scuzzman · 09-30-2004, 07:41 AM

I think this is what he means:

Quote:

Well heres the problem i installed qt and its in the file where the previous version was and i tryed again...

His reinstall went to the same place as his previous install (which doesnt really make sense, but OK)

Quote:

same response

Checking for Qt...configure:error:Qt (>= Qt 3.2) (headers and libraries)

Quote:

also i cant access the config.log it says access denied and i am root
so wut should i do??? [/B]

I'll just correct this a little bit: *ahem*
Also, I can't access the config.log. It says "Access Denied", while I'm root.
I think that's what he meant.

Are you trying to actually read it? Ie:

Code:

less config.log

or execute it? Ie:

Code:

./config.log

nicksmart234 · 09-30-2004, 04:00 PM

no well see the thing is i went to qt's site and then downloaded the free version and then downloaded it to /usr/share/doc/qt once the download was complete i then went to that dir. and then unpackaged it to the same dir. After that i went onto the konsole and cd to the dir and type ./configure it configured it and after that i maked it.
Now what i did was i needed that to install the new version of Kopete and when i cd to the kopete dir and type in ./configure i still get the same error message(see above post) does that answer some of your questions?

Tinkster · 09-30-2004, 05:10 PM

OOOOOK ...

Please
cd /path/to/qt
and
tree -d

Copy & paste the output of the latter.

Cheers,
Tink

i-m-new2linux · 05-27-2005, 07:35 AM

I am experiencing a similar problem, as I am getting the "Qt (>= Qt 3.2) (headers and libraries) not found" error when attempting the ./config of amarok. Qt is installed as an RPM, amaroK is from source (from downloaded tarball). From this post, do I understand correctly that I should remove QT as an RPM and install it from tarball for all to play nicely - or am I completely lost??
Please be patient as I am a recent convert