Are you asking how to get the selected part of the text? Check out this demo:
https://www.dropbox.com/s/jx5y6cg8guncx1j/GetSelectedText.c3p?dl=0
Well, that example is also just using inputText, just as I stated in my previous post.
My use case may be very specific as I haven't seen many published games that support highlighting text and text to voice. However, as one of the primary uses of Construct is for web builds, it would be nice to make it possible to create ordinary html5 text element which also can be previewed in the editor.
Who would have known? Using inputText (an HTML5 element) also got rid of text blur when zooming in with the browser. I guess it makes sense as the text is no longer shown as pure graphic.