Hello guys,

Im registering a javascript extension like this :
webViewEO.RegisterJSExtensionFunction("actionJSCallibri", new JSExtInvokeHandler(WebView_JSAction));

In the documentation we can read "webView1.RegisterJSExtensionFunction("demoAbout", new JSExtInvokeHandler(WebView_JSDemoAbout))"

But there is no documentation on how to remove this handler, so I tryed the following :

webViewEO.RegisterJSExtensionFunction -= new JSExtInvokeHandler(WebView_JSAction);


But it seems that's not working.
I was profiling my app and saw that after closing the webview :





The handler is still there and my memory profiler app indicate "... have instances that are directly rooted by a delegate. This can indicate that the delegate has not been properly removed."

Is it normal or I do need to perform some action to close this handle ?

Best regards

Hi,

You can use RegisterJSExtensionFunction("actionJSCallibri", null) to remove the extension handler.

The GiveFocusHandler and WndMsgEventHandler is used by the WebControl wrapper class. Just destroying the WebView will not disconnect these two handlers. Setting WebControl.WebView to null should disconnect them. However even if it is not disconnected, as soon as the WebControl is destroyed, all of them will be eligible for garbage collection. So it should not be an issue.

Thanks!

Glad to hear that it works for you! Please feel free to let us know if there is anything else.

Thanks!