src_gui_dialogs_qfiledialog.cpp

Go to the documentation of this file.

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
 
fileName = QFileDialog::getOpenFileName(this,
    tr("Open Image"), "/home/jana", tr("Image Files (*.png *.jpg *.bmp)"));
 
 
"Images (*.png *.xpm *.jpg);;Text files (*.txt);;XML files (*.xml)"
 
 
QFileDialog dialog(this);
dialog.setFileMode(QFileDialog::AnyFile);
 
 
dialog.setNameFilter(tr("Images (*.png *.xpm *.jpg)"));
 
 
dialog.setViewMode(QFileDialog::Detail);
 
 
QStringList fileNames;
if (dialog.exec())
    fileNames = dialog.selectedFiles();
 
 
dialog.setNameFilter("All C++ files (*.cpp *.cc *.C *.cxx *.c++)");
dialog.setNameFilter("*.cpp *.cc *.C *.cxx *.c++");
 
 
const QStringList filters({"Image files (*.png *.xpm *.jpg)",
                           "Text files (*.txt)",
                           "Any files (*)"
                          });
QFileDialog dialog(this);
dialog.setNameFilters(filters);
dialog.exec();
 
 
QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"),
                                                "/home",
                                                tr("Images (*.png *.xpm *.jpg)"));
 
 
QStringList files = QFileDialog::getOpenFileNames(
                        this,
                        "Select one or more files to open",
                        "/home",
                        "Images (*.png *.xpm *.jpg)");
 
 
QString fileName = QFileDialog::getSaveFileName(this, tr("Save File"),
                           "/home/jana/untitled.png",
                           tr("Images (*.png *.xpm *.jpg)"));
 
 
QString dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"),
                                                "/home",
                                                QFileDialog::ShowDirsOnly
                                                | QFileDialog::DontResolveSymlinks);
 
QStringList mimeTypeFilters({"image/jpeg", // will show "JPEG image (*.jpeg *.jpg *.jpe)
                             "image/png",  // will show "PNG image (*.png)"
                             "application/octet-stream" // will show "All files (*)"
                            });
 
QFileDialog dialog(this);
dialog.setMimeTypeFilters(mimeTypeFilters);
dialog.exec();
 
"Images (*.png *.xpm *.jpg);;Text files (*.txt);;XML files (*.xml)"
 
auto fileContentReady = [](const QString &fileName, const QByteArray &fileContent) {
    if (fileName.isEmpty()) {
        // No file was selected
    } else {
        // Use fileName and fileContent
    }
};
QFileDialog::getOpenFileContent("Images (*.png *.xpm *.jpg)",  fileContentReady);
 
QByteArray imageData; // obtained from e.g. QImage::save()
QFileDialog::saveFile("myimage.png", imageData);