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Destroy must be called from the same thread the WebView is created Options
BenjaminSimpson1989
Posted: Wednesday, June 29, 2022 3:30:52 PM
Rank: Advanced Member
Groups: Member

Joined: 1/12/2015
Posts: 81
I'm occasionally getting this exception on version 22.1.13.0:
Quote:
Exception: System.Exception: Destroy must be called from the same thread the WebView is created.
at EO.WebBrowser.WebView.lqid(Boolean fq)
at EO.WebBrowser.WebView.Create(IntPtr hWnd)


Here's my code:
Code: Visual Basic.NET
Private Sub ChangeProxy()
                    webView.Destroy()
                    webView.Engine.Stop(False) 'this line is needed so it shuts down eowp.exe but doesn't delete the cache folder

                    webView.Engine = EO.WebEngine.Engine.Create("WE")

                    webView.Engine.Options.CachePath = CachePath

                    webView.Engine.Options.Proxy = New EO.Base.ProxyInfo(EO.Base.ProxyType.HTTP, "127.0.0.1", 8888, "", "")
                    CreateWebViewWithHandle(pbWebControl.Handle)

                    webView.DoEvents()
        End Sub

        Private Sub CreateWebViewWithHandle(handle As IntPtr)
            pbWebControl.Parent.BeginInvoke(
                Sub()
                    Dim intAttempts = 0
                    While True
                        Try
                            webView.Create(handle)

                            Exit Sub
                        Catch ex As Exception
                            intAttempts = intAttempts + 1
                            If intAttempts >= 20 Then
                                Throw
                            Else
                                Threading.Thread.Sleep(3000)
                            End If
                        End Try
                    End While
                End Sub
            )
        End Sub
eo_support
Posted: Wednesday, June 29, 2022 3:55:41 PM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 24,217
You will receive this error if the WebView was created in one thread and you try to destroy it in a different thread (triggered by Create). Obviously the code you posted does not show such multi-thread issue. So we are not able to tell much from the code you posted. However if you can send a test project over we will be happy to debug it here.


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