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Qt4.8.7 is the final version of Qt4. It is the most stable and classic version of the Qt4 series (many embedded boards still use Qt4.8). In fact, this version was released at about the same time as Qt5.5. Reference link 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/
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Qt5.6.3 is the last long-term support version that supports the
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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 by yourself, and the official installation package is no longer provided.
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Qt5.12.5 is the version with the highest performance of the final style sheet. After checking the code, the cool code expert found that the source code of the later version of the style sheet had loop nesting settings in order to fix a bug, resulting in a sharp drop in performance. The more interfaces, the performance dropped by 10%. More than times.
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Qt5.14.2 is the last version that provides binary installation packages, and subsequent versions need to be installed online.
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The Qt5.15 series is the last version to support win7. The subsequent Qt6 series versions need to change the source code compilation to support win7, which is difficult for novices to do.
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The Qt6.0/6.1 version actually supports win7, but because there are too many missing modules and a mountain of bugs, the boss said that it is not necessary to use it, so there is no point in using this version.
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Qt6 does not support win7, which means that it does not support it in the development stage or the running stage. You need the Qt library in both the development stage and the running stage. As long as the Qt library does not support it, it will not be supported anywhere.
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Since the new version of qtc7 is compiled with Qt6, it can only run on win10 and above, which means that if you want to use the new qtc7+Qt5 for development, you must also use win10 and above.
I recommend a Lingsheng Academy project class. I personally think the teacher taught it well. I would like to share it with you:
Lingsheng Platinum Learning Card (including infrastructure/high-performance storage/golang cloud native/audio and video/Linux kernel)
https://xxetb.xet .tech/s/VsFMs