@Axel-Spoerl I took this method from the example of the Qt text editor, it works if any text is selected with this cursor, and continues typing with this cursor with the specified font further. But here's the problem, if I want the behavior as in standard text editors, to first set the font modifiers and then start typing, the font in the cursor is reset to the standard one from QTextDocument. The option to store the cursor in the heap is unlikely to work, since it is impossible to set the cursor in the QTextDocument. At the moment, I have solved the problem using "Pending font", if the cursor does not have any text under it, I write all font changes to the QFont variable, and display font data from it on the UI, and as soon as the user enters something, I immediately apply font settings to the entered character, so far it works quite well. But if it is possible to change the font settings for future input without workarounds, I would be glad to know.

Hi, Please provide a minimal compilable example to reproduce your issue.

@jsulm, I apologize, I should've mentioned it in the original post: one of the requirements of the project is that we can not use any 3rd party library for the text editor, except for Qt. From what I see in the QScintilla github, it is ported to Qt on top of the TextEdit widget, so I will look further into their implementation to figure out how they've done it.

@kshegunov Right... Thanks, something didnt trigger in the brain. Now its fine: connect(uap, &CUaProxy::uaItemChanged, this, [this, i]( const CUaProxy::MsgType msgt, const int riskIndex, const QVariant& value) { this->onUaMsgReceived(msgt, i, riskIndex, value); }, Qt::QueuedConnection); Also needed Qt::QueuedConnection eventually.

The solution was to set the text browsers setTextInteractionFlags() to (textInteractionFlags() | Qt::LinksAccessibleByMouse). In my case: textBrowserReadConversation->setTextInteractionFlags(textBrowserReadConversation->textInteractionFlags() | Qt::LinksAccessibleByMouse | Qt::LinksAccessibleByKeyboard); I found the solution here: https://forum.qt.io/topic/70075/qtextbrowser-anchorclicked-not-emitted/2 But I'll leave the topic, because it was hard for me to find it through google or the search engine on this forum.

@SGaist Good idea, I hadn't considered that approach. Thanks for the help!

I played around with scrollbar calculation a long time ago and I remember that it was a bit confusing. But AFAIR you have to set the QScrollBar::setValue() relative to QScrollBar::maximum() with the same ratio as QAbstractScrollArea::widget()::height() / calculatedPos. (not sure - just guessing...)

Done. https://forum.qt.io/topic/64346/qtextdocument-and-multithreading

Applied to my code, marked as [SOLVED]. Thank you once again!

You can try taking a look at QTextDocument::drawCursor