如何使CEF支持Flash

方法一：复制Chrome浏览器下的pepperFlash，通过cef命令行参数设置路径。

        public Form1()

        {

            InitializeComponent();

            InitializeChromium();

        }

        private void InitializeChromium()

        {

            ChromiumWebBrowser.OnBeforeCfxInitialize += ChromiumWebBrowser_OnBeforeCfxInitialize;

            ChromiumWebBrowser.OnBeforeCommandLineProcessing += ChromiumWebBrowser_OnBeforeCommandLineProcessing;

            ChromiumWebBrowser.Initialize();

            ChromiumWebBrowser wb = new ChromiumWebBrowser();

            wb.Dock = DockStyle.Fill;

            wb.Parent = this;

            wb.LoadUrl("chrome://version");

        }

        void ChromiumWebBrowser_OnBeforeCommandLineProcessing(Chromium.Event.CfxOnBeforeCommandLineProcessingEventArgs e)

        {

            e.CommandLine.AppendSwitch("--disable-web-security");//关闭同源策略

            e.CommandLine.AppendSwitchWithValue("ppapi-flash-version", "18.0.0.209");//PepperFlash\manifest.json中的version

            e.CommandLine.AppendSwitchWithValue("ppapi-flash-path", "PepperFlash\\pepflashplayer.dll");

        }

        void ChromiumWebBrowser_OnBeforeCfxInitialize(Chromium.WebBrowser.Event.OnBeforeCfxInitializeEventArgs e)

        {

            e.Settings.CachePath = "Session";

            e.Settings.Locale = "zh-CN";

        }

方法二：通过命令行参数设置cef使用系统安装的flash

        void ChromiumWebBrowser_OnBeforeCommandLineProcessing(Chromium.Event.CfxOnBeforeCommandLineProcessingEventArgs e)

        {

            e.CommandLine.AppendSwitch("--disable-web-security");//关闭同源策略

            e.CommandLine.AppendSwitch("--enable-system-flash");//使用系统flash

        }

参考：https://bitbucket.org/chromiumembedded/cef/issues/1586/add-pepper-flash-plugin-support