QT实现IP地址输入框

#include "dialog.h" #include "ui_dialog.h" Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog) { ui->setupUi(this); //使用正则表达式实现IP地址输入控件 QRegExp rx("((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)"); QRegExpValidator v(rx, 0); ui->lineEdit->setValidator(&v); ui->lineEdit->setInputMask("000.000.000.000"); // } Dialog::~Dialog() { delete ui; }