on_lineEdit_textChanged是在哪里设置的connect？

翅膀又硬了 2014-06-25 11:41:19

如题 GoToCell 那个例子里面，没找到设置连接的地方。怎么生效的？

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翅膀又硬了 2014-06-25

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ui_gotocelldialog.h


/********************************************************************************
** Form generated from reading UI file 'gotocelldialog.ui'
**
** Created: Wed Jun 25 11:16:47 2014
**      by: Qt User Interface Compiler version 4.8.4
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/

#ifndef UI_GOTOCELLDIALOG_H
#define UI_GOTOCELLDIALOG_H

#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QDialogButtonBox>
#include <QtGui/QHBoxLayout>
#include <QtGui/QHeaderView>
#include <QtGui/QLabel>
#include <QtGui/QLineEdit>
#include <QtGui/QVBoxLayout>
#include <QtGui/QWidget>

QT_BEGIN_NAMESPACE

class Ui_GoToCellDialog
{
public:
    QVBoxLayout *vboxLayout;
    QHBoxLayout *hboxLayout;
    QLabel *label;
    QLineEdit *lineEdit;
    QDialogButtonBox *buttonBox;

    void setupUi(QWidget *GoToCellDialog)
    {
        if (GoToCellDialog->objectName().isEmpty())
            GoToCellDialog->setObjectName(QString::fromUtf8("GoToCellDialog"));
        GoToCellDialog->resize(273, 83);
        vboxLayout = new QVBoxLayout(GoToCellDialog);
        vboxLayout->setObjectName(QString::fromUtf8("vboxLayout"));
        hboxLayout = new QHBoxLayout();
        hboxLayout->setObjectName(QString::fromUtf8("hboxLayout"));
        label = new QLabel(GoToCellDialog);
        label->setObjectName(QString::fromUtf8("label"));

        hboxLayout->addWidget(label);

        lineEdit = new QLineEdit(GoToCellDialog);
        lineEdit->setObjectName(QString::fromUtf8("lineEdit"));

        hboxLayout->addWidget(lineEdit);


        vboxLayout->addLayout(hboxLayout);

        buttonBox = new QDialogButtonBox(GoToCellDialog);
        buttonBox->setObjectName(QString::fromUtf8("buttonBox"));
        buttonBox->setOrientation(Qt::Horizontal);
        buttonBox->setStandardButtons(QDialogButtonBox::Cancel|QDialogButtonBox::NoButton|QDialogButtonBox::Ok);

        vboxLayout->addWidget(buttonBox);

#ifndef QT_NO_SHORTCUT
        label->setBuddy(lineEdit);
#endif // QT_NO_SHORTCUT

        retranslateUi(GoToCellDialog);

        QMetaObject::connectSlotsByName(GoToCellDialog);
    } // setupUi

    void retranslateUi(QWidget *GoToCellDialog)
    {
        GoToCellDialog->setWindowTitle(QApplication::translate("GoToCellDialog", "Go to Cell", 0, QApplication::UnicodeUTF8));
        label->setText(QApplication::translate("GoToCellDialog", "&Cell Location:", 0, QApplication::UnicodeUTF8));
    } // retranslateUi

};

namespace Ui {
    class GoToCellDialog: public Ui_GoToCellDialog {};
} // namespace Ui

QT_END_NAMESPACE

#endif // UI_GOTOCELLDIALOG_H

翅膀又硬了 2014-06-25

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gotocelldialog.h


#ifndef GOTOCELLDIALOG_H
#define GOTOCELLDIALOG_H

#include <QDialog>

#include "ui_gotocelldialog.h"

class GoToCellDialog : public QDialog, public Ui::GoToCellDialog
{
     Q_OBJECT

public:
    GoToCellDialog(QWidget *parent = 0);

private slots:
    void on_lineEdit_textChanged();
};

#endif

gotocelldialog.cpp


#include <QtGui>

#include "gotocelldialog.h"

GoToCellDialog::GoToCellDialog(QWidget *parent)
    : QDialog(parent)
{
    setupUi(this);
    buttonBox->button(QDialogButtonBox::Ok)->setEnabled(false);

    QRegExp regExp("[A-Za-z][1-9][0-9]{0,2}");
    lineEdit->setValidator(new QRegExpValidator(regExp, this));

    connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
}

void GoToCellDialog::on_lineEdit_textChanged()
{
    buttonBox->button(QDialogButtonBox::Ok)->setEnabled(
            lineEdit->hasAcceptableInput());
}