Note that CELL imports an open-source text editor QScintilla, which's a transported version of the original Scintilla editor for windows Qt, owned by Riverbank Computing Limited, here's their official website:
https://www.riverbankcomputing.com/software/qscintilla
We very appreciate about Riverbank's production, because QScintilla works very well.
Go to https://www.riverbankcomputing.com/software/qscintilla/download page, and download QScintilla for windows.
After unarchiving the QScintilla source package, enter its child directory Qt4Qt5, then double click project file "QScintilla.pro".
Qt will load the QScintilla source automaticly, choose the MinGW 32-bit toolchain, and compile debug version and release version respectively.
After that, you will get two dynamic link libraries "qscintilla2_qt5.dll" & "qscintilla2_qt5d.dll", they correspond to debug mode and release mode respectively.
Almost done,put the two dlls to a protable directory, and add them into cell's pro file to compile.
The GNU License(http://www.gnu.org/licenses/gpl-3.0.html)
If you have any ideas or suggestions, welcome to submit an issue/pull request.