Fix file system problem (umlauts) on Linux

src/core/article.h

@@ -16,7 +16,7 @@ class Article : public EntityUuid
   public:
     Article() = default;
     Article(int price);
-    //virtual ~Article() = default;
+    virtual ~Article() = default;
 
     void setArticleNo(int articleNo);
     void setPrice(int price);

src/core/seller.h

@@ -14,7 +14,7 @@ class Seller : public EntityInt
 {
   public:
     Seller() = default;
-    ~Seller() = default;
+    virtual ~Seller() = default;
     Seller(const std::string& firstName, const std::string& lastName, int sellerNo = 0,
            int numArticlesOffered = 0);
 

src/gui/mainwindow.cpp

@@ -462,7 +462,11 @@ void MainWindow::onImportSellerExcelActionTriggered()
     if (filename.isEmpty())
         return;
 
+#if defined(_WIN64) || defined(_WIN32)
     fs::path filePath(filename.toStdWString());
+#else
+    fs::path filePath(filename.toStdString());
+#endif
 
     std::size_t numImported{};
     if (case_insensitive_match(filePath.extension().string(), std::string(".xlsx"))) {
@@ -498,7 +502,11 @@ void MainWindow::onImportSellerJsonActionTriggered()
     if (filename.isEmpty())
         return;
 
+#if defined(_WIN64) || defined(_WIN32)
     fs::path filePath(filename.toStdWString());
+#else
+    fs::path filePath(filename.toStdString());
+#endif
 
     JsonUtil::importSellers(filePath, marketplace_.get());
     updateStatLabel();
@@ -529,7 +537,11 @@ void MainWindow::onExportSalesJsonActionTriggered()
     if (filename.isEmpty())
         return;
 
+#if defined(_WIN64) || defined(_WIN32)
     fs::path filePath(filename.toStdWString());
+#else
+    fs::path filePath(filename.toStdString());
+#endif
 
     JsonUtil::exportSales(filePath, marketplace_.get(),
                           settings.value("global/cashPointNo").toInt());
@@ -545,7 +557,11 @@ void MainWindow::onImportSalesJsonActionTriggered()
     if (filename.isEmpty())
         return;
 
+#if defined(_WIN64) || defined(_WIN32)
     fs::path filePath(filename.toStdWString());
+#else
+    fs::path filePath(filename.toStdString());
+#endif
 
     delete ui_.salesView->model();
     try {