Revert Rejected Dialogue/form To Show Last Accepted Values On Reopen

I'm setting up an 'options' dialog in a program, where I can change some values and close the dialog with Ok/Cancel to accept of reject my changes. After closing the dialog with ca

Solution 1:

You have to implement a method that sets the values of the dialog to the default values:

# ...
class MainWindow(QMainWindow):
    # ...

    def open_dlg(self):
        self.txtdlg.reset()
        if self.txtdlg.exec_() == QDialog.Accepted:
            print(self.txtdlg.preferences)


class TextDialog(QDialog):
    # ...

    def reset(self):
        self.preferences = "text here"
        self.textedit.setText(self.preferences)

    def save_and_close(self):
        self.preferences = self.textedit.toPlainText()
        self.accept()
# ...