QT Linux下QFileDialog自动添文件后缀

   

　QString strFileName = QFileDialog::getSaveFileName(this, tr("保存文件"),".", tr("测点文件(*.csv)"));
    if (strFileName.isEmpty())
    {
        return;
    }
    //针对linux处理, 若后缀为空自动添加.csv后缀
    if (QFileInfo(strFileName).suffix().isEmpty())
    {
        strFileName += ".csv";
    }