https://doc.qt.io/qt-6/richtext.html
https://doc.qt.io/qt-6/richtext-structure.html

Thanks for the help. I will check out the web sites and source code tomorrow.

I assume you mean text with a format applied and not RTF. There is no RTF support in Qt that I am aware of.

The QTextEdit will accept some rich text if the QTextEdit::acceptRichText() property is true (the default). In this case, the clipboard would need the clipboard MIME data to include either an HTML component, a rich text copy from another Qt program (application/x-qrichtext or application/x-qt-richtext), or possibly Markdown (text/markdown).

You can QTextEdit::canInsertFromMimeData() and QTextEdit::insertFromMimeData() to cater for anything you need to paste.

Btw, this works in QDialog until I save it to a QStringList and retrieve it which converts it to plain text

Of course, you cant save rich text in a plain QString.

Also, is it possible for a Qt programmer to incorporate the rtf editor available in QtCreator into his/her own apps?

Look at the QtCreator source how it's done there and feel free to built your own :)

This might also be helpful:

• https://doc.qt.io/qt-6/richtext.html
• https://doc.qt.io/qt-6/richtext-structure.html