namespace?Xilium.CefGlue
{
????using?System;
????using?System.Collections.Generic;
????using?System.Globalization;
????using?System.Runtime.InteropServices;
????using?System.Text;
????using?Xilium.CefGlue.Interop;

????public?static?unsafe?class?CefRuntime
????{
????????private?static?readonly?CefRuntimePlatform?_platform;

????????private?static?bool?_loaded;
????????private?static?bool?_initialized;

????????static?CefRuntime（）
????????{
????????????_platform?=?DetectPlatform（）;
????????}

????????#region?Platform?Detection
????????private?static?CefRuntimePlatform?DetectPlatform（）
????????{
????????????var?platformId?=?Environment.OSVersion.Platform;

????????????if?（platformId?==?PlatformID.MacOSX）
????????????????return?CefRuntimePlatform.MacOSX;

????????????int?p?=?（int）platformId;
????????????if?（（p?==?4）?||?（p?==?128））
????????????????return?IsRunningOnMac（）???CefRuntimePlatform.MacOSX?:?CefRuntimePlatform.Linux;

????????????return?CefRuntimePlatform.Windows;
????????}

????????//From?Managed.Windows.Forms/XplatUI
????????private?static?bool?IsRunningOnMac（）
????????{
????????????IntPtr?buf?=?IntPtr.Zero;
????????????try
????????????{
????????????????buf?=?Marshal.AllocHGlobal（8192）;
????????????????//?This?is?a?hacktastic?way?of?getting?sysname?from?uname?（）
????????????????if?（uname（buf）?==?0）
????????????????{
????????????????????string?os?=?Marshal.PtrToStringAnsi（buf）;
????????????????????if?（os?==?“Darwin“）
????????????????????????return?true;
????????????????}
????????????}
????????????catch?{?}
????????????finally
????????????{
????????????????if?（buf?!=?IntPtr.Zero）
????????????????????Marshal.FreeHGlobal（buf）;
????????????}

????????????return?false;
????????}

????????[DllImport（“libc“）]
????????private?static?extern?int?uname（IntPtr?buf）;

????????public?static?CefRuntimePlatform?Platform
????????{
????????????get?{?return?_platform;?}
????????}
????????#endregion

????????///?

????????///?Loads?CEF?runtime.
????????///?

????????///?
????????///?
????????///?
????????public?static?void?Load（）
????????{
????????????Load（null）;
????????}

????????///?

????????///?Loads?CEF?runtime?from?specified?path.
????????///?

????????///?
????????///?
????????///?
????????public?static?void?Load（string?path）
????????{
????????????if?（_loaded）?return;

????????????if?（!string.IsNullOrEmpty（path））
????????????{
????????????????if?（Platform?==?CefRuntimePlatform.Windows）
????????????????????LoadLibraryWindows（path）;
????????????????else
????????????????????throw?new?PlatformNotSupportedException（“CEF?Runtime?can‘t?be?initialized?on?altered?path?on?this?platform.?Use?CefRuntime.Loa