add versioninfo in nonclientarea

src/Shared/HandyControlDemo_Shared/UserControl/Main/NonClientAreaContent.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Controls;
+using GalaSoft.MvvmLight.Messaging;
+using HandyControl.Data;
+using HandyControl.Tools;
+using HandyControlDemo.Data;
+using HandyControlDemo.Properties.Langs;
+using HandyControlDemo.Window;
+
+namespace HandyControlDemo.UserControl
+{
+    public partial class NonClientAreaContent
+    {
+        public NonClientAreaContent()
+        {
+            InitializeComponent();
+        }
+
+        private void ButtonLangs_OnClick(object sender, RoutedEventArgs e)
+        {
+            if (e.OriginalSource is Button button && button.Tag is string langName)
+            {
+                PopupConfig.IsOpen = false;
+                if (langName.Equals(GlobalData.Config.Lang)) return;
+                ConfigHelper.Instance.SetLang(langName);
+                LangProvider.Culture = new CultureInfo(langName);
+                Messenger.Default.Send<object>(null, "LangUpdated");
+
+                GlobalData.Config.Lang = langName;
+                GlobalData.Save();
+            }
+        }
+
+        private void ButtonConfig_OnClick(object sender, RoutedEventArgs e) => PopupConfig.IsOpen = true;
+
+        private void ButtonSkins_OnClick(object sender, RoutedEventArgs e)
+        {
+            if (e.OriginalSource is Button button && button.Tag is SkinType tag)
+            {
+                PopupConfig.IsOpen = false;
+                if (tag.Equals(GlobalData.Config.Skin)) return;
+                GlobalData.Config.Skin = tag;
+                GlobalData.Save();
+                ((App)Application.Current).UpdateSkin(tag);
+            }
+        }
+
+        private void MenuAbout_OnClick(object sender, RoutedEventArgs e)
+        {
+            new AboutWindow
+            {
+                Owner = Application.Current.MainWindow
+            }.ShowDialog();
+        }
+    }
+}