CEF4 Delphi - with Thinfinity Virtual UI

[NDzubiel]

Hello @all,

I am trying to embed Chrome into my application - that I am using with Thinfinty Virtual UI - but I am getting this error - I guess it has to do something with the browser display/draw functions - I tried several things - but nothing seems to work ... has anybody already solved this problem ?

Thanks.

Nils

Faulting application name: SimpleBrowser.exe, version: 1.0.0.0, time stamp: 0x617e68be Faulting module name: libcef.dll, version: 95.7.14.0, time stamp: 0x6179e9ee Exception code: 0x80000003 Fault offset: 0x02647633 Faulting process id: 0x994 Faulting application start time: 0x01d7ce464df00d37 Faulting application path: C:\Google\SimpleBrowser.exe Faulting module path: C:\Google\libcef.dll Report Id: 30dff0dd-71d0-4cf8-a7ca-46852f8e9340 Faulting package full name: Faulting package-relative application ID:

[salvadordf]

I tried the Thinfinity VirtualUI demos available at their website using the MiniBrowser demo and all of them work correctly.

SimpleBrowser and many other demos block new popup windows to keep them as simple as possible but the MiniBrowser demo can handle them. Perhaps VistualUI needs popup windows to work.

[NDzubiel]

Hello,

I think this was a misunderstanding – right now – I have the Delphi TWebbrowser component integrated within my application – to show help and other things - since IE goes away – I wanted to use the embedded Chrome instead – the problem is – that some people run my application using Virtual UI – and this fails – I made a demo for you – if you install Thinfinity Virtual UI – you find that this demo fails:

https://www.nhd.com/nhddownload/SM/SimpleBrowser.2021-11-03.01.zip

If you could look into this – this really would help. Thank you.

Nils

Best regards

[Nils H Dzubiel]

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From: Salvador Díaz Fau @.> Sent: Mittwoch, 3. November 2021 09:44 To: salvadordf/CEF4Delphi @.> Cc: Nils H. Dzubiel @.>; Author @.> Subject: Re: [salvadordf/CEF4Delphi] CEF4 Delphi - with Thinfinity Virtual UI (Issue #391)

I tried the Thinfinity VirtualUI demos available at their website using the MiniBrowser demo and all of them work correctly.

SimpleBrowser and many other demos block new popup windows to keep them as simple as possible but the MiniBrowser demo can handle them. Perhaps VistualUI needs popup windows to work.

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[salvadordf]

I haven't tested that yet but I wouldn't be surprised if the SimpleOSRBrowser demo works fine when you virtualize it with Thinfinity Virtual UI. Could you try that demo too?

[salvadordf]

I installed the trial and tried to run a few demos and all of them crash inside Thinfinity Virtual UI. Even the official CEF sample application can't start in Thinfinity Virtual UI. The debug log shows that the GPU process is crashing.

[salvadordf]

Not only the GPU subprocesses crash. Also the Network service is crashing. It seems that all Chromium subprocesses crash when you run them inside Thinfinity Virtual UI.

I tried setting GlobalCEFApp.SingleProcess to true and the browser starts correctly but this is an unsupported mode and it has shutdown problems. I tried running the demo with the credential of another user with admin rights and the problem is the same. I also tried all these settings without success : GlobalCEFApp.EnableGPU := False; GlobalCEFApp.AddCustomCommandLine('--disable-gpu-process-crash-limit'); GlobalCEFApp.AddCustomCommandLine('--disable-gpu-rasterization'); GlobalCEFApp.AddCustomCommandLine('--disable-gpu-vsync'); GlobalCEFApp.AddCustomCommandLine('--disable-gpu-watchdog'); GlobalCEFApp.AddCustomCommandLine('--disable-software-rasterizer');

Perhaps Thinfinity Virtual UI doesn't allow to launch any other process from a hosted app.

[salvadordf]

Closing because this seems to be a limitation in Thinfinity Virtual UI. It doesn't seem to allow the app to launch subprocesses and this is a Chromium requirement.