Hello,
in principle you can use any text editor of your choice and implement the project by text coding - all *.ewp and *.ewu files are readable text files. Furthermore, the Professional Edition of Embedded Wizard contains a comand line tool to compile the entire GUI application.
But anyway - from our point of view, it does not make much sense to develop a graphical user interface within a text editor.
The visual programming approach of Embedded Wizard is one of its key features, which makes development very comfortable, efficient and maintainable.
Best regards,
Manfred.