Hello.

Using QPlainTextEdit class that provides a widget that I used to edit and display plain text I have created a separate window from my main program. Now I want to create an action in the main program window tab who tells me if the text window is open or closed. I find no function in the class QPlainTextEdit that resembles the one I used with other widgets I have on my main window (function toggleViewAction, QDockWidget class). Does anyone know what can I use?

Thanks!