Improvement of selection of language / dictionaries.

When switching the languages, if the newly selected dictionary
is "compatible" with the system best language or user's locale,
then the system best language locale or user's locale is activated,
not the locale connected to the dictionary.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/slic3r/GUI/GUI_App.hpp b/src/slic3r/GUI/GUI_App.hpp
index 83017f176..a8043e991 100644
--- a/src/slic3r/GUI/GUI_App.hpp
+++ b/src/slic3r/GUI/GUI_App.hpp
@@ -88,7 +88,11 @@ class GUI_App : public wxApp
     size_t          m_em_unit; // width of a "m"-symbol in pixels for current system font 
                                // Note: for 100% Scale m_em_unit = 10 -> it's a good enough coefficient for a size setting of controls
 
-    std::unique_ptr<wxLocale> 		m_wxLocale;
+    std::unique_ptr<wxLocale> 	  m_wxLocale;
+    // System language, from locales, owned by wxWidgets.
+    const wxLanguageInfo		 *m_language_info_system = nullptr;
+    // Best translation language, provided by Windows or OSX, owned by wxWidgets.
+    const wxLanguageInfo		 *m_language_info_best   = nullptr;
 
     std::unique_ptr<ImGuiWrapper> m_imgui;
     std::unique_ptr<PrintHostJobQueue> m_printhost_job_queue;