TEdgeBrowser creation randomly fails

[jesu 3]

Hello. I have an application in which I show some webpages and pdfs, so I'm using tedgebrowser. I have copied WebView2Loader.dll. In the same computer, some days it works, other days it doesn't work.

 

I have a declaration:
 

    WebBrowser: TEdgeBrowser;

First of all I do is to initialize it:

    WebBrowser.CreateWebView;

and I have a procedure to know when it fails:

procedure TFPrincipal.WebBrowserCreateWebViewCompleted(Sender: TCustomEdgeBrowser; AResult: HRESULT);
begin
  // el problema de esto es que se llama de forma asíncrona y tarda un buen rato
  if Succeeded(AResult) then
  begin
//  ProcDebug('finalizó creación edge');
    if WebBrowser.ControllerInterface <> nil then
      WebBrowser.ControllerInterface.Set_IsVisible(Integer(LongBool(True)));
  end
  else
  begin
    ShowMessage('>> Fallo en creación navegador  hresult: ' + IntToStr(Aresult));
  end;
end;

when it fails it returns hresult: -2147023496. I've tried to find the meaning and I arrived here:

 

https://learn.microsoft.com/en-us/microsoft-edge/webview2/reference/winrt/microsoft_web_webview2_core/corewebview2weberrorstatus?view=webview2-winrt-1.0.2903.40

 

but I can't identify the issue. How can I know where's the problem?

Thanks.

 

[FPiette 392]

36 minutes ago, jesu said:

-2147023496

You must convert this code to hexadecimal => 80070578

Then search Google for this code and edge browser.

The code 80070578 means: "invalid window handle".

 

[jesu 3]

24 minutes ago, FPiette said:

Then search Google for this code and edge browser.

The code 80070578 means: "invalid window handle".

 

Thanks. The search only returns this page: https://github.com/MicrosoftEdge/WebView2Feedback/issues/3097

where they talk about random issues that are solved restarting the computer. Is there any other way I could/should try to restart the webview?

 

[FPiette 392]

3 hours ago, jesu said:

Is there any other way I could/should try to restart the webview?

I don't know.

I have written only one application which make use TEdgeBrowser. It's part of an automation process which runs every single day without any glitch. In that application, TEdgeBrowser is simply dropped on the VCL form. I don't even use OnCreateWebViewCompleted event.

[salvadordf 37]

Try using WebView4Delphi and implement the TWVBrowser.OnInitializationError and GlobalWebView2Loader.OnInitializationError events.

Check the GlobalWebView2Loader.ErrorMessage and GlobalWebView2Loader.ErrorCode values too.

 

Keep the browser visible until it's fully initialized and then hide it.

Edited Saturday at 07:17 AM by salvadordf

[jesu 3]

The problem of using a custom component is that if a vulnerability is discovered in Edge, we can blame Microsoft and expect that they solve it. If it happens in Chromium, who would solve it?

[salvadordf 37]

WebView4Delphi uses the WebView2 framework to embed an Edge browser. 

 

Edge is based on Chromium but the WebView2 framework is updated automatically by Windows.

 

I just updated the readme in the repository to avoid confusions.

 

I suggested WebView4Delphi because it gives you a lot more details in case of initialization problems. It's updated to the latest WebView2 framework version and it implements all the interfaces exposed by WebView2.