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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QFileDialog>
#include <QWidget>
class FileDialogExample : public QWidget
{
Q_OBJECT
public:
FileDialogExample();
};
FileDialogExample::FileDialogExample()
{
QString fileName;
QFileDialog dialog(this);
{
//! [0]
fileName = QFileDialog::getOpenFileName(this,
tr("Open Image"), "/home/jana", tr("Image Files (*.png *.jpg *.bmp)"));
//! [0]
}
{
//! [1]
QFileDialog dialog(this);
dialog.setNameFilter(tr("Images (*.png *.xpm *.jpg);;Text files (*.txt);;XML files (*.xml)"));
dialog.exec();
//! [1]
}
{
//! [2]
QFileDialog dialog(this);
dialog.setFileMode(QFileDialog::AnyFile);
//! [2]
}
{
//! [3]
dialog.setNameFilter(tr("Images (*.png *.xpm *.jpg)"));
//! [3]
}
{
//! [4]
dialog.setViewMode(QFileDialog::Detail);
//! [4]
}
{
//! [5]
QStringList fileNames;
if (dialog.exec())
fileNames = dialog.selectedFiles();
//! [5]
}
{
//! [6]
dialog.setNameFilter("All C++ files (*.cpp *.cc *.C *.cxx *.c++)");
dialog.setNameFilter("*.cpp *.cc *.C *.cxx *.c++");
//! [6]
}
{
//! [7]
const QStringList filters({"Image files (*.png *.xpm *.jpg)",
"Text files (*.txt)",
"Any files (*)"
});
QFileDialog dialog(this);
dialog.setNameFilters(filters);
dialog.exec();
//! [7]
}
{
//! [8]
QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"),
"/home",
tr("Images (*.png *.xpm *.jpg)"));
//! [8]
}
{
//! [9]
QStringList files = QFileDialog::getOpenFileNames(
this,
"Select one or more files to open",
"/home",
"Images (*.png *.xpm *.jpg)");
//! [9]
}
{
//! [11]
QString fileName = QFileDialog::getSaveFileName(this, tr("Save File"),
"/home/jana/untitled.png",
tr("Images (*.png *.xpm *.jpg)"));
//! [11]
}
{
//! [12]
QString dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"),
"/home",
QFileDialog::ShowDirsOnly
| QFileDialog::DontResolveSymlinks);
//! [12]
}
{
//! [13]
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();
//! [13]
}
{
/* For convinient quoting
//! [14]
"Images (*.png *.xpm *.jpg);;Text files (*.txt);;XML files (*.xml)"
//! [14]
*/
}
{
//! [15]
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);
//! [15]
}
{
//! [16]
QByteArray imageData; // obtained from e.g. QImage::save()
QFileDialog::saveFileContent(imageData, "myimage.png");
//! [16]
}
}