C#引用CefSharp并屏蔽鼠标右键和禁止拖动放置事件

目录：

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C#引用CefSharp

在C#的设计界面，添加panel控件用来放置CEFSharp浏览器。
CEFSharp浏览器dll添加引用

using CefSharp;using CefSharp.WinForms;

CEFSharp浏览器初始化代码：

public Form1(){    InitializeComponent();    InitBrowser();}public ChromiumWebBrowser browser;public void InitBrowser(){    Cef.Initialize(new CefSettings());    browser = new ChromiumWebBrowser("http://my.csdn.net/u013564470");    browser.Dock = DockStyle.Fill;    panel1.Controls.Add(browser);}

上述完成之后就可以运行了！
注意事项：平台选择X86，右侧解决方案中引用DLL文件，文件放在\项目名\bin\x86\Debug

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C#添加代码屏蔽鼠标右键

在屏蔽之前先查看namespace CefSharp.WinForms内的代码

public class ChromiumWebBrowser : Control, IWebBrowserInternal, IWinFormsWebBrowser, IWebBrowser, IDisposable{    public ChromiumWebBrowser(string address);    public IDownloadHandler DownloadHandler { get; set; }    public ILoadHandler LoadHandler { get; set; }    public IDisplayHandler DisplayHandler { get; set; }    public IContextMenuHandler MenuHandler { get; set; }    public IRenderProcessMessageHandler RenderProcessMessageHandler { get; set; }    public IFindHandler FindHandler { get; set; }    public IRequestHandler RequestHandler { get; set; }    public IFocusHandler FocusHandler { get; set; }    public IResourceHandlerFactory ResourceHandlerFactory { get; set; }    public IGeolocationHandler GeolocationHandler { get; set; }    public bool CanGoForward { get; }    public bool CanGoBack { get; }    public bool IsBrowserInitialized { get; }    public override bool Focused { get; }    public IDragHandler DragHandler { get; set; }    public IKeyboardHandler KeyboardHandler { get; set; }    public ILifeSpanHandler LifeSpanHandler { get; set; }    public IDialogHandler DialogHandler { get; set; }    public string Address { get; }    public string TooltipText { get; }    public bool IsLoading { get; }    public RequestContext RequestContext { get; set; }    public BrowserSettings BrowserSettings { get; set; }    public bool IsActivating { get; set; }    public IJsDialogHandler JsDialogHandler { get; set; }    public event EventHandler<AddressChangedEventArgs> AddressChanged;    public event EventHandler<StatusMessageEventArgs> StatusMessage;    public event EventHandler<ConsoleMessageEventArgs> ConsoleMessage;    public event EventHandler<LoadingStateChangedEventArgs> LoadingStateChanged;    public event EventHandler<FrameLoadEndEventArgs> FrameLoadEnd;    public event EventHandler<FrameLoadStartEventArgs> FrameLoadStart;    public event EventHandler<LoadErrorEventArgs> LoadError;    public event EventHandler<IsBrowserInitializedChangedEventArgs> IsBrowserInitializedChanged;    public event EventHandler<TitleChangedEventArgs> TitleChanged;    public IBrowser GetBrowser();    public void Load(string url);    public void RegisterAsyncJsObject(string name, object objectToBind, bool camelCaseJavascriptNames = true);    public void RegisterJsObject(string name, object objectToBind, bool camelCaseJavascriptNames = true);    protected override void Dispose(bool disposing);    protected override void OnGotFocus(EventArgs e);    protected override void OnHandleCreated(EventArgs e);    protected override void OnSizeChanged(EventArgs e);}

我们在其中的public IContextMenuHandler MenuHandler { get; set; }接口中更改鼠标右键事件。
方法为继承该类接口，并重写。实现方式如下：

public class MenuHandler : IContextMenuHandler{   public void OnBeforeContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model)   {       model.Clear();   }   public bool OnContextMenuCommand(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, CefMenuCommand commandId, CefEventFlags eventFlags)   {       return false;   }   public void OnContextMenuDismissed(IWebBrowser browserControl, IBrowser browser, IFrame frame)   {   }   public bool RunContextMenu(IWebBrowser browserControl, IBrowser browser, IFrame frame, IContextMenuParams parameters, IMenuModel model, IRunContextMenuCallback callback)   {       return false;   }}

定义完之后在CEFSharp代码初始化中引用。如下：

public ChromiumWebBrowser browser;public void InitBrowser(){    Cef.Initialize(new CefSettings());    browser = new ChromiumWebBrowser("http://my.csdn.net/u013564470");    browser.MenuHandler = new MenuHandler();    browser.Dock = DockStyle.Fill;    panel1.Controls.Add(browser);}

之后运行，会发现已经屏蔽鼠标右键。

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C#添加代码屏蔽拖动放置事件

屏蔽拖动放置事件和屏蔽鼠标右键类似。我们在其中的public IDragHandler DragHandler { get; set; }接口中更改拖动放置事件。
方法为继承该类接口，并重写。实现方式如下：

public class DragHandler : IDragHandler{    public bool OnDragEnter(IWebBrowser browserControl, IBrowser browser, IDragData dragData, DragOperationsMask mask)    {        return true;// false;//throw new NotImplementedException();    }    public void OnDraggableRegionsChanged(IWebBrowser browserControl, IBrowser browser, IList<DraggableRegion> regions)    {        //throw new NotImplementedException();    }}

return true;为禁止。定义完之后在CEFSharp代码初始化中引用。如下：

public ChromiumWebBrowser browser;public void InitBrowser(){    Cef.Initialize(new CefSettings());    browser = new ChromiumWebBrowser("http://my.csdn.net/u013564470");    browser.MenuHandler = new MenuHandler();    browser.DragHandler = new DragHandler();    browser.Dock = DockStyle.Fill;    panel1.Controls.Add(browser);}

之后运行，会发现已经屏蔽鼠标右键和拖动放置事件。

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