topic Re: AutoCAD 2021 CefSharp in .NET Forum

AutoCAD 2021 CefSharp

astuy — Wed, 02 Sep 2020 15:53:33 GMT

Hello,

we are using CefSharp (https://www.nuget.org/packages/CefSharp.Wpf/) in one of our AutoCAD-Addins. Until AutoCAD 2020 everything works fine, but since AutoCAD 2021 there is a problem ("Cef::Initialize() failed.").

I suspect it's AutoCAD's move from AcWebBrowser to AcCef, which breaks our addin. AcCef uses CEF version 77, but there is no corresponding version of CefSharp, just 75 or 79.

What could I do to make it run again? Or could Autodesk switch to a version supported by CefSharp?

Thanks, Achim

Re: AutoCAD 2021 CefSharp

guillaume_aronica — Mon, 21 Sep 2020 07:44:18 GMT

Hi,
We have the same problem here, any workaround found?

Thanks

Re: AutoCAD 2021 CefSharp

astuy — Mon, 21 Sep 2020 08:10:37 GMT

We solved the problem by switching to the WebView-Control. It's Edge-Engine instead of Chromium, but still better than Trident (Internet Explorer) engine of the old Browser Control.

Until now it works. And if it will not work in future, we will search for any other solution.

Re: AutoCAD 2021 CefSharp

metzdorf — Tue, 21 Feb 2023 12:55:43 GMT

Hi,

I have nearly the same problem, but I don't think that the problem is the change from AcWebBrowser to AcCef. I think that the problem are some new UI components like the modal window (Autodesk.AutoCAD.ApplicationServices.Application.ShowModalWindow) or the visual browser of the PaletteSet (Autodesk.AutoCAD.Windows.PaletteSet.AddVisualBrowser).

The biggest problem is to find a different solution to allow a communication between some JS-functions from the website and the remaining parts of AutoCAD.

Re: AutoCAD 2021 CefSharp

Anonymous — Mon, 25 Jan 2021 05:26:24 GMT

Hello All,

I am facing same issue and getting error {"Cef::Initialize() failed"} with AutoCAD 2021. For all other versions of AUtoCAD it works fine.

Please look into this issue as soon as possible its blocker for our addin.

Thanks and regards,

Moulla PAKALI

Re: AutoCAD 2021 CefSharp

tbrammer — Thu, 06 May 2021 09:12:30 GMT

@guillaume_aronica @metzdorf @Anonymous :

We ran into this issue when porting from AutoCAD 2020 to AutoCAD 2022.

Has someone found a solution in the meantime?
Switching to WebView as suggested by @astuy is no option for us.

Re: AutoCAD 2021 CefSharp

metzdorf — Thu, 06 May 2021 09:17:51 GMT

Yes I found a solution. I changed my cefsharp implementation to use WebView2.

It uses the engine from from the chromium based Edge.

Re: AutoCAD 2021 CefSharp

CADbloke — Wed, 13 Oct 2021 21:16:05 GMT

You can use your own assemblies instead of getting stuck with the ones that ship with AutoCAD. See https://stackoverflow.com/questions/38671641/could-not-load-file-or-assembly-newtonsoft-json-version-9-0-0-0-culture-neutr/48043024 - put it in the startup method. Relevant codez that I use for something similar in case dead link ...

/// <summary> Initializes thisCadtool in AutoCAD / BricsCAD. Runs when Tool is loaded</summary> /// <seealso cref="AcRun.IExtensionApplication.Initialize()"/> public void Initialize() // <= Sometimes the Intialize() fires more than once http://www.theswamp.org/index.php?topic=13630.msg194036#msg194036 { try { AppDomain currentDomain = AppDomain.CurrentDomain; // wait for the app to be ready: https://www.keanw.com/2013/01/displaying-a-dialog-on-autocad-startup-using-net.html currentDomain.AssemblyResolve -= new ResolveEventHandler(MyResolveEventHandler); // <= Sometimes the Intialize() fires more than once currentDomain.AssemblyResolve += new ResolveEventHandler(MyResolveEventHandler); // https://forums.autodesk.com/t5/navisworks-api/could-not-load-file-or-assembly-newtonsoft-json/td-p/7028055?profile.language=en // ... more stuffs } catch (Exception ex) { App.Log.Error(ex, "Initialize() blew up"); } /// <summary> Because AutoCAD hijacks the version of <c>JSON.NET</c> if you don't tell it to xxxx off</summary> } /// <remarks> https://forums.autodesk.com/t5/navisworks-api/could-not-load-file-or-assembly-newtonsoft-json/m-p/7460535#M3467 </remarks>> /// <param name="sender"> Source of the event. </param> /// <param name="args"> Resolve event information. </param> /// <returns> <c>JSON.NET</c> </returns> private Assembly MyResolveEventHandler(object sender, ResolveEventArgs args) { if (args?.Name?.Contains("Newtonsoft.Json") ?? false) { try { string assemblyFileName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + "\\Newtonsoft.Json.dll"; return Assembly.LoadFrom(assemblyFileName); } catch (Exception e) { App.Log.Error(e, "FAILed loading JSON.NET"); // will probably fail because logger uses JSON.NET return null; } } else return null; }

Re: AutoCAD 2021 CefSharp

981178411 — Tue, 30 Aug 2022 07:49:24 GMT

Hello, I would like to ask whether there is a way to prohibit CAD loading Accef

Re: AutoCAD 2021 CefSharp

hamgeorge2015 — Tue, 21 Feb 2023 12:45:30 GMT

Is there any update on the conflict between the Cefsharp and the AcCef?

Re: AutoCAD 2021 CefSharp

metzdorf — Tue, 21 Feb 2023 12:59:25 GMT

I have not followed this problem any more since I changed to WebView2.

Re: AutoCAD 2021 CefSharp

ceduca — Sat, 11 Mar 2023 20:00:20 GMT

@metzdorf

Hello, how to proceed to use webview2?
I downloaded the SDK using NuGet. When it is an EXE application, it works perfectly and the site is shown in the webview, but when it is a DLL application for autocad, nothing is shown. The form only has the webview.

I'm using version 2023.
One image shows how the form is in visual studio, another shows when it is an EXE application (showing google) and another shows when it is a DLL in autocad (empty form).

What should I do?

Re: AutoCAD 2021 CefSharp

metzdorf — Mon, 13 Mar 2023 06:11:54 GMT

Hi ceduca,

I believe you could have one of my initial problems:

- are all required dll's in the directory with you build dll? (Microsoft.Web.WebView2.Core.dll, Microsoft.Web.WebView2.WinForms.dll and WebView2Loader.dll)

- do you run the complete init in you dll in the right order? (CoreWebView2Environment.CreateAsync, WebView2.EnsureCoreWebView2Async)

A different problem could be the ResizeHandling. In my application was a problem the resize handling. After changing the panel size, was the browser empty.

I hope this helps a little bit.

Re: AutoCAD 2021 CefSharp

ceduca — Mon, 13 Mar 2023 14:21:39 GMT

Hi metzdorf!

Thanks for answering.

When used in an EXE, WebView2Loader.dll does not need to be in the same folder as the EXE, but when used in a DLL it does. I also changed the init order of CoreWebView2Environment.CreateAsync, WebView2.EnsureCoreWebView2Async.

Now it's working

Thank you!