Docking Pane - pvComObject is NULL error

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pvComObject is NULL error

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Category: Codejock Products
Forum Name: Docking Pane
Forum Description: Topics Related to Codejock Docking Pane
URL: http://forum.codejock.com/forum_posts.asp?TID=17790
Printed Date: 30 January 2025 at 6:16pm
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Topic: pvComObject is NULL error

Posted By: nikhilkumar
Subject: pvComObject is NULL error
Date Posted: 18 January 2011 at 4:13am

Hi,

on one of the XP machine i'm getting following error "COM object method invocation error. Attempt to use object before it's been initialized, pvComObject is NULL." while opening (dataflex) VDF14.1 application.

same application works fine on other machine so this should be windows machine specific.

studio indicates that it is something to do with codejocks -SigCjW_DockingPane.pkg file.

error is on line "Get ComProperty of (phDispatchDriver(Self)) 5 OLE_VT_BOOL to retVal". if i comment this line then error disappears. i'm using SigCodejock Wrapper 13.2.1 on VDF14.1

    { MethodType=Property DesignTime=False }
    Function ComClosed Returns Boolean
        Boolean retVal
        Get ComProperty of (phDispatchDriver(Self)) 5 OLE_VT_BOOL to retVal
        Function_Return retVal
    End_Function

any idea as to how to resolve this problem.

thanks,
nikhil

Replies:

Posted By: Ian Smith
Date Posted: 20 January 2011 at 5:14am

This is an issue with the VDF SIG Dataflex classes not with the code jock controls. Please repost on the Dataaccess VDF SIG forum ( http://support.dataaccess.com/Forums/forum.php - http://support.dataaccess.com/Forums/forum.php ).

The normal cause of errors like this is the COM control not being properly registered on the target computer.