Add startup auto-start for desktop

v2rayN/ServiceLib/Common/WindowsUtils.cs

@@ -0,0 +1,52 @@
+using Microsoft.Win32;
+
+namespace ServiceLib.Common
+{
+    internal static class WindowsUtils
+    {
+        public static string? RegReadValue(string path, string name, string def)
+        {
+            RegistryKey? regKey = null;
+            try
+            {
+                regKey = Registry.CurrentUser.OpenSubKey(path, false);
+                var value = regKey?.GetValue(name) as string;
+                return Utils.IsNullOrEmpty(value) ? def : value;
+            }
+            catch (Exception ex)
+            {
+                Logging.SaveLog(ex.Message, ex);
+            }
+            finally
+            {
+                regKey?.Close();
+            }
+            return def;
+        }
+
+        public static void RegWriteValue(string path, string name, object value)
+        {
+            RegistryKey? regKey = null;
+            try
+            {
+                regKey = Registry.CurrentUser.CreateSubKey(path);
+                if (Utils.IsNullOrEmpty(value.ToString()))
+                {
+                    regKey?.DeleteValue(name, false);
+                }
+                else
+                {
+                    regKey?.SetValue(name, value);
+                }
+            }
+            catch (Exception ex)
+            {
+                Logging.SaveLog(ex.Message, ex);
+            }
+            finally
+            {
+                regKey?.Close();
+            }
+        }
+    }
+}