Detect if WebView2 Runtime is installed

[softtouch 4]

Is there any way to detect that the webview2 runtime is installed on the target system?

[Lajos Juhász 238]

You can inspect the registry as documented here: https://docs.microsoft.com/en-us/microsoft-edge/webview2/concepts/distribution#detect-if-a-suitable-webview2-runtime-is-already-installed

[softtouch 4]

3 hours ago, Lajos Juhász said:

You can inspect the registry as documented here: https://docs.microsoft.com/en-us/microsoft-edge/webview2/concepts/distribution#detect-if-a-suitable-webview2-runtime-is-already-installed

Thanks, I did not see that. That seems to work.

[KodeZwerg 54]

I did asked myself today the same question and did made a different approach and would like to know what you think about it?

On the form with the TWebBrowser that has its SelectedEngine property set to "EdgeIfAvailable" I put in FormShow event:

WebBrowser.Navigate('about:blank');

For the WebBrowser I did created an Event for "OnNavigateBefore2" with the following content:

  if string(URL) = string('about:blank') then
    if WebBrowser.ActiveEngine <> Edge then
      begin
        // here I let my form display a message that Edge Runtime is missing and a button to open the official download site
      end;

For me it worked and now I searched for other solutions and found this thread.

(I was aware of the Registry Key but that does not ensure if user might has deleted the WebView2Loader.dll...)

[Der schöne Günther 306]

From my experience, this is sufficient:

	TWebBrowserHelper = class helper for TWebBrowser
		function getIsUsingEdge(): Boolean;
	end;
    
function TWebBrowserHelper.getIsUsingEdge(): Boolean;
begin
	Result := Assigned(GetEdgeInterface());
end;