ChromiumWebBrowser禁止鼠标右键和拖动

Posted 2021-12-30 ly570

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;
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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

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);
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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);

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之后运行，会发现已经屏蔽鼠标右键。

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 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);