Will program run with newer version of Qt? - qt

I have a program that I need to edit that was developed with Qt version 5.0.1. Will the program still work correctly if I just grab the newest version and edit the program with that? Or am I better off getting the old version from the Qt archive?

Qt 5 is not 100% compatible with previous versions, so probably you will have to make some migration stuff. This little transition guide is your friend!

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QT application on BeagleboneBlack

Hi I have a debian image on BBB I have already installed QT creator on B^3 but the problem is whenever I try to start a new project in qt creator, couldn't see any option of kit. Infact when i add qmake and compiler path the application throws error.
What can I do to solve the problem. Can i directly get the full pack of SDK from qt.io/download ?
You must compile Qt libraries for your device (BBB) on your own, using specified compiler. You can find more information on this topic, here:
Qt Cross-Compilation Options
As soon as you compile Qt libraries for your device, you must move them to appropriate directories (on your BBB).
First, I would suggest learning to cross-compile, it's much faster & more easily maintained when you want to move to new versions. There's a ton of documentation and community around doing this. Windows & Linux both of which are probably dated, but info is still relavent. I've heard it's much easier from a linux host, but that could be biased.
That being said, if you don't want to cross-compile I believe you can simply install the qt embedded libraries. This question may offer some good advice. Once you have the libraries installed, you should be able to use qmake directly to create the Makefile for your project, then you can use cmake, or g++, etc.. to do the actual compiling.
You're likely going to work in command line though, I'm not sure you can run QT Creator on the BBB directly. I could be wrong.

QWebView which version of webkit supported?

I am new to Qt. What I understand is Qt is porting webview from webkit. [Correct me if i am wrong]. and I could not able to find which version of the webkit is ported into Qt 5.0 or higher version.
Kindly suggest me how to find?
It's running on WebKit2, which specific version is a bit more tricky to find out, but you should be able to look through the Qt repository on gitorious to determine it. If I remember rightly it changes depending on how you've built Qt5 and where from.
Seems to be a 3-4 months old snapshot, see the git repo for the included commits.

Migrating old xcode projects into latest version

I have problem with memory management and leaks(Potential leak of an object) of old xcode projects.Can i Migrate these projects to new xcode4.5 with Automatic reference counting to overcome the above issues. If this possible means how can i made it? and Is this right way or what else to do?
Yes You can definitely do that & that too with using Xcode latest version itself.
XCode is intelligent enough to change the non-ARC into ARC and also can use the latest Syntax.
Open your project into Latest version of Xcode, probably 5.0.1 & then go to menu
Edit-> Refactor-> Convert to Objective-C ARC
There are many other options under Refactor menu. You can try those.

Compiler configuration for Qt Creator

I am new to Qt and its IDE Qt Creator so pardon my ignorance.
When I try to compile my code I get the exception
"Qt Creator needs a compiler set up to build. Configure a compiler in the kit options".
I have installed MingGW for compiling C++ code.
However, I am having a problem configuring it for Qt Creator.
Any help will be appreciated. Thanks
I suspect you are using the new 5.0 Qt. It required a bit of prodding for me too.
If you look into Settings > Build & Run > Kits you should see an auto-detected entry which will probably have an exclamation mark in front and is not editable. Ignore this.
Add a new Kit
Give it a name, set the "Qt version" and select a compiler. (Compilers should have been auto-detected. If you do not see any compilers, you will have to set at least one up manually)
Click the "Make Default" button. (You may have to modify project build settings to use the new Kit too)
There may be a better way, but I do not know it. And you should probably use 4.x until 5 is out of beta.
I was also having the same problem, so what I did was this:
sudo apt-get install g++
sudo apt-get install libgl1-mesa-dev libglu1-mesa-dev
I then closed the QT Creator, restarted it, and it worked.
I do not know which of the above two made it work, but it worked!
You are using Qt Creator 2.6.x, as those are the only ones that have kits.
Please go to Tools>Options>Build & Run>Compilers and add you mingw compiler there. You need to point creator to 'g++' in your mingw installation.
Then head over to the Kits tab and click on the desktop kit that creator should have created for you. In the details there is a field called Compiler (or Tool chain, don't remember). Select your mingw compiler there. Check the debugger field. If it is empty or using the gdb debugger that is part of mingw: Grab a debugger from http://builds.qt-project.org/, install it and point creator to that one. The debuggers delivered as part of mingw are known to not work well with creator.
Do not use the Nokia Qt SDK: Everything in there is terribly outdated by now!
This is just a starting point to troubleshoot your question, but the Qt Creator preferences has settings in the "Build & Run" area where you can define the location of your build toolchain: compiler, Qt version to build, etc. For mingw you'd have to point the right field to the location of g++, for a Qt version the location of qmake.
Not always the last version is the better. If someone is learning Qt to implement production solutions, is not good idea to use Qt version 5 (see the Qt5 change log). If you want to learn Qt programming, I think that the Nokia SDK is a good starting point, because you only have to install it as another Windows software, and start to coding.
By using linux is another good starting point, because you will have all the develop environment with a few apt-get commands.
When I started programming Qt, I lost a lot of hours to get a complete environment working with QtCreator, and I understand that not everybody has time for it.
I am using Qt Creator 3.5.1 based on Qt 5.5.1. The error "No compiler set in kit" has been a problem every time I have to configure a development system. The solution that worked for me is to select Tools/Options/Compilers and add a compiler. In my case a GCC compiler with Name:g++, Compiler path:/usr/bin/g++. The trick is to add the compiler before trying to add a Kit. If I add a Kit before I add a compiler I can never add the compiler to the Kit. If you having this problem delete the Kit, add a compiler, then add the Kit.
In your questions you must provide us more information about your problem, such as what versions of software are you using.
About your question, I think, that very good idea to you (as a beginner) is to use all-in-box QtSDK (link, need registration). There are ready-to-use QtCreator, MinGW and litle bit old Qt Libs in that QtSDK 1.2.1. So, you dont't need to configure it at all.
Hope, it'll help. Good luck!

phoneGap files not found in QT-creator

i'm new to Qt, i just install all in one QT-SDK beta with QT-creator as described here. I tried to import PhoneGap example files from there (I use Qt-creator coz when I try to do it on Carbide, as described, it said that my EPOCROOT is wrong, but it isn't). When I want to debug or run project it said that there are some files missing, but i see them in files-tree (look). Any ideas what's going on?
I am working on PhoneGap Qt and am currently in the process of upgrading PhoneGap Qt to use the latest Qt Release, as well as the latest Qt Mobility Libraries. Hopefully once this is complete things will work smoother for you. Keep an eye on the github repository for updates.

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