1 QStringList FileNames;
 2 FileNames = QFileDialog::getOpenFileNames(this, tr("Open File"),
 3        QCoreApplication::applicationDirPath(),
 4        tr("ALL(*.png; *.jpg; *.bmp; *.tif; *.tiff);;PNG(*.png);;JPG(*.jpg);;BMP(*.bmp);;TIF(*.tif);;TIFF(*.tiff))"));
 5 
 6 if (FileNames.size() == 0)
 7 {
 8         QMessageBox::critical(this, tr("ERR"), tr("Empty"));
 9         return;
10 }
11 
12 qDebug() << "FileNames" << FileNames;

   static QStringList getOpenFileNames(QWidget *parent = nullptr,
                                        const QString &caption = QString(),
                                        const QString &dir = QString(),
                                        const QString &filter = QString(),
                                        QString *selectedFilter = nullptr,
                                        Options options = Options());