Fix Windows locale folder

pi2-view/include/MapApplication.hpp

@@ -15,6 +15,7 @@ public:
   static void removeWindow(Gtk::Window &window);
 
 private:
+  static void initGettext();
   static Glib::RefPtr<Gtk::Application> application;
   static std::thread thread;
 };

pi2-view/src/MapApplication.cpp

 #include "MapApplication.hpp"
+#include <glibmm/i18n.h>
 #include <glibmm/refptr.h>
 #include <gtkmm/application.h>
 #include <gtkmm/window.h>
 #include <vector>
 
-Glib::RefPtr<Gtk::Application> MapApplication::application =
-    Gtk::Application::create();
+void MapApplication::initGettext() {
+#ifdef G_OS_WIN32
+  gchar *win32_dir = g_win32_get_package_installation_directory_of_module(NULL);
+  bindtextdomain("pi2-view",
+                 g_build_filename(win32_dir, "share", "locale", NULL));
+  g_free(win32_dir);
+#endif /* G_OS_WIN32 */
+
+  bind_textdomain_codeset("pi2-view", "UTF-8");
+}
+
+Glib::RefPtr<Gtk::Application> MapApplication::application = []() {
+  initGettext();
+  return Gtk::Application::create();
+}();
 std::thread MapApplication::thread;
 
 void MapApplication::addWindow(Gtk::Window &window) {