Qt4.8.7 is the final version of Qt4. It is the most stable and classic version in the Qt4 series (many embedded boards still use Qt4.8). In fact, this version was released around the same time as Qt5.5. Reference link [ https://www.qt.io/blog/2015/05/26/qt-4-8-7-released ]( https://www.qt.io/blog/2015/05/26/ qt-4-8-7- released ) [ https://blog.qt.io/blog/2015/07/01/qt-5-5-released/](https://blog.qt.io/blog /2015/07/01/qt-5-5-released/ )
Qt5.6.3 is the last long-term support version that supports the xp system, and Qt5.7.0 is the last non-long-term support version that supports the xp system.
Qt5.12.3 is the last version that provides the mysql database plug-in. Later versions need to compile the corresponding mysql database plug-in, and the official installation package is no longer provided.
Qt5.12.5 is the version with the highest performance of the final style sheet . After consulting the code, it is found that the style sheet source code of the later version has a loop nesting setting in order to fix a bug, resulting in a sharp drop in performance. The more interfaces there are, the performance drops by 10. more than double.
Qt5.14.2 is the last version that provides binary installation packages, and all subsequent versions need to be installed online.
The Qt5.15 series is the last version to support win7, and the later Qt6 series versions need to change the source code compilation to support it , which is difficult for Xiaobai.
Reference: Summarize the cold knowledge of several Qt versions-Knowledge
University of Science and Technology of China: http://mirrors.ustc.edu.cn/qtproject/
Catalog description
archive Each version of the Qt development tool installation package, (you can download the Qt development environment and source code)
community_releases community-customized Qt library, Tizen version of Qt and Qt additional source packages
development_releases Development releases, unofficial releases during Qt development
Documentation tutorials and demonstration videos for learning Qt
Ministro Android version.
official_releases Official release version, long-term support version (you can download the Qt development environment and source code).
online Qt online installation package
snapshots previews of the latest Qt libraries and development tools in development testing