QLineEdit设置ip输入规则

QRegExp rx("^((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)$");

m_IPValidator = new QRegExpValidator(rx, this);

lineEdit->setValidator(m_IPValidator);

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