Looking for Qt SDK 4.7.4
I need to install the Qt SDK 4.7.4 and I would like to know where I have to look for to find it. Is there a place where it is possible to download the previous installer versions of Qt SDK?
Thank you in advance.
Perhaps "this":http://www.developer.nokia.com/info/sw.nokia.com/id/84801bfe-8517-4287-9829-014c6f572127/Qt_SDK_1_1_2.html is what you are looking for? The link is there on official download page...
Alternately, you can always get Qt libs from gitorious or FTP archives.
how much does qt sdk changes with the qt version update?
What do you mean?
There is more than 200 people working on Qt, I hope that gives you some perspective. You can take a look at "stats":http://www.macieira.org/blog/qt-stats/ provided by one of main people in Qt - Thiago.
If you mean how many breaking changes there are, it's quite simple: Qt promises not to break the ABI in all 4.x and 5.x releases. While it's not always perfect, you can usually change from version to version without much trouble.
But I really have no idea what your question is really about, so it's hard to give a precise answer.