Fixed sys-lang in Windows 10.

TODO/_current.md

@@ -26,11 +26,8 @@
 # Localization
 
 * Test system lang change.
-    - Windows forces a log-out to change lang, how to test the event?
-
-* Windows lang preferences still wrong, MS added a COM api that overrides what we are using.
-    - See https://searchfox.org/mozilla-central/source/intl/locale/windows/OSPreferences_win.cpp#87
-    - This is a WRT COM thing, not sure if can be called with "windows-sys" only.
+    - Does not update after first system change?
+    - Event is received, sys_lang is set.
 
 * A trait that provides the available locales and locales on demand.
     - Replace `L10N.load_dir` with this trait.

examples/localize.rs

@@ -13,16 +13,16 @@ use zero_ui::core::l10n::{Lang, LangMap, L10N};
 // Run this command to scrap template:
 // cargo run -p zero-ui-l10n-scraper -- -i"examples/localize*" -o"examples/res/localize"
 
-// use zero_ui_view_prebuilt as zero_ui_view;
+use zero_ui_view_prebuilt as zero_ui_view;
 
 fn main() {
     examples_util::print_info();
-    // zero_ui_view::init();
+    zero_ui_view::init();
 
     // let rec = examples_util::record_profile("localize");
 
-    zero_ui_view::run_same_process(app_main);
-    // app_main();
+    // zero_ui_view::run_same_process(app_main);
+    app_main();
 
     // rec.finish();
 }

zero-ui-view/Cargo.toml

@@ -91,6 +91,12 @@ features = [
     "Win32_Graphics_OpenGL",
     "Win32_UI_Accessibility",
 ]
+[target.'cfg(windows)'.dependencies.windows]
+version = "0.48.0"
+features = [
+    "Foundation_Collections",
+    "System_UserProfile"
+]
 
 [target.'cfg(not(windows))'.dependencies]
 sys-locale = "0.3"

zero-ui-view/src/config.rs

@@ -364,13 +364,22 @@ pub(crate) fn locale_config() -> LocaleConfig {
 
 #[cfg(windows)]
 pub(crate) fn locale_config() -> LocaleConfig {
-    // sys_locale returns only one lang, this code adapted from `whoami` crate.
+    // sys_locale returns only one lang, this code adapted from `whoami` crate and Firefox.
 
+    use windows::System::UserProfile::GlobalizationPreferences;
     use windows_sys::Win32::{
         Foundation::FALSE,
         Globalization::{GetUserPreferredUILanguages, MUI_LANGUAGE_NAME},
     };
 
+    // Try newer WinRT COM API (Windows8+)
+    if let Ok(r) = GlobalizationPreferences::Languages() {
+        let r: Vec<String> = r.into_iter().map(|l| l.to_string_lossy()).collect();
+        if !r.is_empty() {
+            return LocaleConfig { langs: r };
+        }
+    }
+
     let mut num_languages = 0;
     let mut buffer_size = 0;
     let mut buffer;