def message_box_ok(text, informative_text, title=None, icon=QMessageBox.Information, timeout=-1):
if timeout < 0:
msg_box = QMessageBox()
else:
msg_box = TimedMessageBox(timeout)
msg_box.setText('<b>%s</b>' % text)
if informative_text:
msg_box.setInformativeText(informative_text)
msg_box.setIcon(icon)
if title:
msg_box.setWindowTitle(title)
else:
msg_box.setWindowTitle(QApplication.instance().applicationName())
msg_box.setStandardButtons(QMessageBox.Ok)
msg_box.setDefaultButton(QMessageBox.Ok)
if timeout >= 0:
msg_box.update_text()
horizontal_spacer = QSpacerItem(400, 0, QSizePolicy.Minimum, QSizePolicy.Expanding)
layout = msg_box.layout()
layout.addItem(horizontal_spacer, layout.rowCount(), 0, 1, layout.columnCount())
return msg_box.exec_()
