mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-23 20:10:48 +08:00
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "mainwindow.h"
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#include "textedit.h"
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#include <QAction>
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#include <QApplication>
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#include <QCompleter>
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#include <QFile>
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#include <QMenuBar>
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#include <QMessageBox>
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#include <QStringListModel>
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//! [0]
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent)
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{
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createMenu();
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completingTextEdit = new TextEdit;
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completer = new QCompleter(this);
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completer->setModel(modelFromFile(":/resources/wordlist.txt"));
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completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);
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completer->setCaseSensitivity(Qt::CaseInsensitive);
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completer->setWrapAround(false);
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completingTextEdit->setCompleter(completer);
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setCentralWidget(completingTextEdit);
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resize(500, 300);
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setWindowTitle(tr("Completer"));
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}
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//! [0]
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//! [1]
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void MainWindow::createMenu()
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{
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QAction *exitAction = new QAction(tr("Exit"), this);
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QAction *aboutAct = new QAction(tr("About"), this);
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QAction *aboutQtAct = new QAction(tr("About Qt"), this);
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connect(exitAction, &QAction::triggered, qApp, &QApplication::quit);
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connect(aboutAct, &QAction::triggered, this, &MainWindow::about);
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connect(aboutQtAct, &QAction::triggered, qApp, &QApplication::aboutQt);
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QMenu *fileMenu = menuBar()->addMenu(tr("File"));
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fileMenu->addAction(exitAction);
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QMenu *helpMenu = menuBar()->addMenu(tr("About"));
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helpMenu->addAction(aboutAct);
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helpMenu->addAction(aboutQtAct);
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}
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//! [1]
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//! [2]
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QAbstractItemModel *MainWindow::modelFromFile(const QString& fileName)
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{
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QFile file(fileName);
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if (!file.open(QFile::ReadOnly))
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return new QStringListModel(completer);
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#ifndef QT_NO_CURSOR
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QGuiApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
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#endif
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QStringList words;
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while (!file.atEnd()) {
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QByteArray line = file.readLine();
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if (!line.isEmpty())
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words << QString::fromUtf8(line.trimmed());
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}
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#ifndef QT_NO_CURSOR
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QGuiApplication::restoreOverrideCursor();
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#endif
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return new QStringListModel(words, completer);
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}
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//! [2]
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//! [3]
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void MainWindow::about()
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{
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QMessageBox::about(this, tr("About"), tr("This example demonstrates the "
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"different features of the QCompleter class."));
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}
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//! [3]
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