General Discussion - WebBrowser Application Error

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WebBrowser Application Error

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Category: Codejock Products
Forum Name: General Discussion
Forum Description: Topics Related to Active-X COM Development in General
URL: http://forum.codejock.com/forum_posts.asp?TID=10216
Printed Date: 21 November 2024 at 6:33pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: WebBrowser Application Error

Posted By: LightRock
Subject: WebBrowser Application Error
Date Posted: 14 April 2008 at 3:21am

I am receiving an application error when hosting a WebBrowser control within a VB ActiveX control and using the SetObjectForScripting (if you remove it there is no error).

I guess it is a problem with the clean up when the control is destoyed (it happens on exit of the .exe or VB itself in design time).

I am hosting your control in another because I extensively use the MSHTML functionality for HTML editing but also need the ability for HTML to call functionality within the application.

Any thoughts?

David

Replies:

Posted By: Oleg
Date Posted: 14 April 2008 at 4:08am

Hi,

Small sample will be great :)

-------------
Oleg, Support Team
CODEJOCK SOFTWARE SOLUTIONS

Posted By: LightRock
Date Posted: 14 April 2008 at 4:37am

https://forum.codejock.com/uploads/20080414_042921_codejock.zip - uploads/20080414_042921_codejock.zip

Attached is a sample of both control and app in the most basic form possible. If you build and register the control and then build the app, the error occurs when closing the .exe.

(Environment: VB6 (SP5) Extreme 11.2.2 / Windows 2000 (SP4) or XP)

Thank you

David

(Can only assume it's to do with binding the function on the control rather than a form)

Posted By: Oleg
Date Posted: 14 April 2008 at 7:01am

Thanks.

Ye, problem that need to release ObjectForScripting.

You can add public method and call it from container:

Public Sub BeforeUnload()
WebBrowser1.SetObjectForScripting Nothing
End Sub

....

Private Sub Form_Unload(Cancel As Integer)
UserControl11.BeforeUnload
End Sub

-------------
Oleg, Support Team
CODEJOCK SOFTWARE SOLUTIONS

Posted By: LightRock
Date Posted: 14 April 2008 at 7:42am

Thanks Oleg, works a treat!

Posted By: LittleJK
Date Posted: 04 August 2008 at 3:51pm

Hi we are having a similar problem but we cannot get the scripting errors to stop by using webbrowser.setobjectForscripting. We have the webbrowser control inside of our application.

below is the snippet of where we are calling it. When we set the setobjectforscripting... it still comes back with scripting errors

Private Sub Form_Load()

    On Error GoTo handle_error

    Screen.MousePointer = vbHourglass

    sDefaultPage = "http://intranet.woodloch.com/roomready"

    Me.web.Navigate sDefaultPage
    Me.web.setObjectForScripting Me

    bFrmLoaded = True

    GoTo doneSub

handle_error:
    bFrmLoaded = False
    Call objErrHandler.HandleError(Err.Number, Me.Name & ".Form_Load", Err.Description)

doneSub:
    Screen.MousePointer = vbDefault

End Sub

Posted By: LightRock
Date Posted: 05 August 2008 at 1:30am

You can stop the standard script warnings by simply adding:

WebBrowser1.ScriptErrorsSuppressed = True

However it does require the 'Disable script debugging' in the advanced settings of IE to be checked, otherwise you get a debug error.