qtextedit - How to make selected/highlighted text area bordered and semitransparent in Qt?

Question

I am using Qt 5.3 and want to highlight and select the text of QTextEdit like Qt Creator. What I get is just simple highlight with blue background and white color. I am able to change the highlight background and text color with stylesheet and QTextCharFormat. But I can not

1. Make the highlight area's border radius little bit rounded.(Note in the screenshot)
2. Draw a border to the selection area.(Note in the screenshot)

In other words I want to format the selection and highlight background area.

question from:https://stackoverflow.com/questions/65917870/how-to-make-selected-highlighted-text-area-bordered-and-semitransparent-in-qt

Answer 1

Waitting for answers