void typeChanged(int v);
/// AFAIK, QValidator only works for QLineEdit so
/// I have to validate listingsED (QTextEdit) manually.
/// This function displays a hint or error message returned by
/// validate_listings_params
void typeChanged(int v);
/// AFAIK, QValidator only works for QLineEdit so
/// I have to validate listingsED (QTextEdit) manually.
/// This function displays a hint or error message returned by
/// validate_listings_params