QT -- 对话框获取文件夹下所选图像名称

环境

VS2015 qt5.9.7 64位

功能

通过对话框选定文件夹，获取该文件夹内所选图片名称

代码

QStringList FileNames;
FileNames = QFileDialog::getOpenFileNames(this, tr("Open File"),
       QCoreApplication::applicationDirPath(),
       tr("ALL(*.png; *.jpg; *.bmp; *.tif; *.tiff);;PNG(*.png);;JPG(*.jpg);;BMP(*.bmp);;TIF(*.tif);;TIFF(*.tiff))"));

if (FileNames.size() == 0)
{
        QMessageBox::critical(this, tr("ERR"), tr("Empty"));
        return;
}

qDebug() << "FileNames" << FileNames;

关键函数：

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