#include <QtGui>#include "gotocelldialog.h"GoToCellDialog::GoToCellDialog(QWidget *parent)    : QDialog(parent){    setupUi(this);    QRegExp regExp("[A-Za-z][1-9][0-9]{0,2}");    lineEdit->setValidator(new QRegExpValidator(regExp, this));    connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));    connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));}void GoToCellDialog::on_lineEdit_textChanged(){    okButton->setEnabled(lineEdit->hasAcceptableInput());}