VCL TEdgeBrowser not initialising

[Incus J 10]

I have VCL TWebBrowser working in “EdgeOnly” mode (SelectedEngine) in a simple test app.

 

It’s loading pages and I can browse sites.  So far so good.

 

I’d like to execute some Javascript and obtain a result.  I’m happy to stick with TWebBrowser if it’s possible.  Must be in EdgeOnly mode though!

 

On the other hand, TEdgeBrowser has built in Javascript execution.  So maybe I should switch to that component - except I can’t get it to work.

 

When I run my test app, TWebBrowser loads OK, but TEdgebrowser remains a grey empty background and ignores all commands to Navigate etc. - I suspect it isn’t initialising.  No error messages.

 

WebView2Loader.dll is present in the app folder - and TWebBrowser is using it successfully.

 

Given that TWebBrowser is working in EdgeOnly mode, what am I missing with TEdgeBrowser?

 

Delphi 12.3 on Windows 11 (Arm, 24H2 64-bit).

[Der schöne Günther 336]

4 minutes ago, Incus J said:

No error messages.

The TEdgeBrowser has an event handler to catch initialization (OnCreateWebViewCompleted and OnProcessFailed). Have you checked those?

[Incus J 10]

Yes, I have an event handler assigned to each of those events - just to log any activity to a TMemo.  Neither event is triggered.

[Der schöne Günther 336]

I am using TEdgeBrowser excessively, up to the point of completely replacing a VCL-based UI with a web-based interface, as well as injecting and calling JavaScript at runtime.

 

Can you provide a minimal example of your project?

 

One caveat is that you have to wait for the TEdgeBrowser to finish navigation and _then_ do something with its content, but I suppose that is the same when being wrapped by TWebBrowser.

[Günther Schoch 66]

@Incus

 

we work with both TEdgeBrowser and a "a version supporting the newest APIs of WebView2 (see https://github.com/salvadordf/WebView4Delphi)

for both, the scripting is working

var js:= 'document.querySelector(''[class=xyz]'').outerText';
edgeBrowser.ExecuteScript(js);

getting the result via

procedure TfrmMain.edgeBrowserExecuteScriptCompleted(Sender: TObject;
  aErrorCode: HRESULT; const aResultObjectAsJson: wvstring;
  aExecutionID: Integer);
begin
  ...

I had at the beginning a similar problem initializing correctly

a) the WebView2Loader.dll has to be not too old

b) the have to be the right choice of x86 or x64 (see https://github.com/salvadordf/WebView4Delphi for a new working copy)

c) why I selected: WebView4Delphi (see https://embt.atlassian.net/servicedesk/customer/portal/1/RSS-3509) ...  we needed to have extensions registered (specifically AdBlocker Plus) to make our solution working efficiantly.

 

best regards

Edited 6 hours ago by Günther Schoch