Qt: Fix failing to load unicode filenames on command line

src/duckstation-qt/main.cpp

@@ -7,6 +7,24 @@
 #include <cstdlib>
 #include <memory>
 
+static bool ParseCommandLineParameters(QApplication& app, QtHostInterface* host_interface,
+                                       std::unique_ptr<SystemBootParameters>* boot_params)
+{
+  const QStringList args(app.arguments());
+  std::vector<std::string> converted_args;
+  std::vector<char*> converted_argv;
+  converted_args.reserve(args.size());
+  converted_argv.reserve(args.size());
+
+  for (const QString& arg : args)
+    converted_args.push_back(arg.toStdString());
+
+  for (std::string& arg : converted_args)
+    converted_argv.push_back(arg.data());
+
+  return host_interface->ParseCommandLineParameters(args.size(), converted_argv.data(), boot_params);
+}
+
 int main(int argc, char* argv[])
 {
   // Register any standard types we need elsewhere
@@ -29,7 +47,7 @@ int main(int argc, char* argv[])
 
   std::unique_ptr<QtHostInterface> host_interface = std::make_unique<QtHostInterface>();
   std::unique_ptr<SystemBootParameters> boot_params;
-  if (!host_interface->ParseCommandLineParameters(argc, argv, &boot_params))
+  if (!ParseCommandLineParameters(app, host_interface.get(), &boot_params))
     return EXIT_FAILURE;
 
   std::unique_ptr<MainWindow> window = std::make_unique<MainWindow>(host_interface.get());