window.cpp 范例文件

itemviews/simplewidgetmapper/window.cpp
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#include "window.h" #include <QtWidgets> Window::Window(QWidget *parent) : QWidget(parent) { setupModel(); nameLabel = new QLabel(tr("Na&me:")); nameEdit = new QLineEdit(); addressLabel = new QLabel(tr("&Address:")); addressEdit = new QTextEdit(); ageLabel = new QLabel(tr("A&ge (in years):")); ageSpinBox = new QSpinBox(); nextButton = new QPushButton(tr("&Next")); previousButton = new QPushButton(tr("&Previous")); nameLabel->setBuddy(nameEdit); addressLabel->setBuddy(addressEdit); ageLabel->setBuddy(ageSpinBox); mapper = new QDataWidgetMapper(this); mapper->setModel(model); mapper->addMapping(nameEdit, 0); mapper->addMapping(addressEdit, 1); mapper->addMapping(ageSpinBox, 2); connect(previousButton, &QAbstractButton::clicked, mapper, &QDataWidgetMapper::toPrevious); connect(nextButton, &QAbstractButton::clicked, mapper, &QDataWidgetMapper::toNext); connect(mapper, &QDataWidgetMapper::currentIndexChanged, this, &Window::updateButtons); QGridLayout *layout = new QGridLayout(); layout->addWidget(nameLabel, 0, 0, 1, 1); layout->addWidget(nameEdit, 0, 1, 1, 1); layout->addWidget(previousButton, 0, 2, 1, 1); layout->addWidget(addressLabel, 1, 0, 1, 1); layout->addWidget(addressEdit, 1, 1, 2, 1); layout->addWidget(nextButton, 1, 2, 1, 1); layout->addWidget(ageLabel, 3, 0, 1, 1); layout->addWidget(ageSpinBox, 3, 1, 1, 1); setLayout(layout); setWindowTitle(tr("Simple Widget Mapper")); mapper->toFirst(); } void Window::setupModel() { model = new QStandardItemModel(5, 3, this); QStringList names; names << "Alice" << "Bob" << "Carol" << "Donald" << "Emma"; QStringList addresses; addresses << "<qt>123 Main Street<br/>Market Town</qt>" << "<qt>PO Box 32<br/>Mail Handling Service" "<br/>Service City</qt>" << "<qt>The Lighthouse<br/>Remote Island</qt>" << "<qt>47338 Park Avenue<br/>Big City</qt>" << "<qt>Research Station<br/>Base Camp<br/>Big Mountain</qt>"; QStringList ages; ages << "20" << "31" << "32" << "19" << "26"; for (int row = 0; row < 5; ++row) { QStandardItem *item = new QStandardItem(names[row]); model->setItem(row, 0, item); item = new QStandardItem(addresses[row]); model->setItem(row, 1, item); item = new QStandardItem(ages[row]); model->setItem(row, 2, item); } } void Window::updateButtons(int row) { previousButton->setEnabled(row > 0); nextButton->setEnabled(row < model->rowCount() - 1); }