QMessageBox is blocking the GUI.

[fatihsezgin]

I have a QPlainTextEdit, and datum that comes from serial port is written constantly. After some commands I want to open a QMessageBox and show some details about user has done. When the QMessageBox is appear on the screen QPlainTextEdit does not update until QMessageBox is closed. How can I achieve the non-blocking type of the messagebox ?

[jsulm]

@fatihsezgin Use https://doc.qt.io/qt-5/qwidget.html#show instead of https://doc.qt.io/qt-5/qmessagebox.html#exec as exec is modal as described in the documentation.

[fatihsezgin]

@jsulm Thank you for quick and efficient response :)