820761 - IAccessible2 interface failed in Mozilla version 18(beta), why?

Status: RESOLVED INCOMPLETE

(Core :: Disability Access APIs, defect)

Description

[Rajesh VR]

User Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.56 Safari/537.4

Steps to reproduce:

I'm using "IAccessible2" interface to find something with Mozilla browser. Its working fine with Mozilla version less than equal to 17.**, but it fails in Mozilla version 18 (beta). Anyone please tell me that why this issue is happening?



Actual results:

IAccessible2 failed in Mozilla version 18 (beta).

Comment 1

[Marco Zehe (:MarcoZ)]

I cannot confirm. NVDA, which uses IAccessible2 heavily, is working as it should in Beta 18. Please provide more information or a code sample.

Comment 2

[Rajesh VR]

(In reply to Marco Zehe (:MarcoZ) from comment #1)
> I cannot confirm. NVDA, which uses IAccessible2 heavily, is working as it
> should in Beta 18. Please provide more information or a code sample.

Hi Marco Zehe,

Some code sample are:

IAccessible2 *pIAcc2 = NULL;
IServiceProvider *pService = NULL;
hr = pService->QueryService(IID_IAccessible, IID_IAccessible2, (void**)&pIAcc2);
if((SUCCEEDED(hr)) && (pIAcc2))
{
// success
}
else
{
// failed (always shows this line of code)
}

Thanks,
R-VR

Comment 3

[Trevor Saunders (:tbsaunde)]

Without actually debugging the only thing I can imagine could wrong in that test is we end up calling the wrong (xpcom QueryInterface() instead of the one for mscom.

Comment 4

[Rajesh VR]

(In reply to Trevor Saunders (:tbsaunde) from comment #3)
> Without actually debugging the only thing I can imagine could wrong in that
> test is we end up calling the wrong (xpcom QueryInterface() instead of the
> one for mscom.

Hi Trevor Saunders,

I'm using MSCom QueryInterface() not xpcom QueryInterface(). And more sample codes are:

IAccessible2 *pIAcc2 = NULL;
IAccessible *pIAccParentTab = NULL;
IServiceProvider *pService = NULL;

// Finding Accessible for parent object (pIAccParentTab).

hr = pIAccParentTab->QueryInterface(IID_IServiceProvider, (void **)&pService);
if(SUCCEEDED(hr) && (pService))
{
  hr = pService->QueryService(IID_IAccessible, IID_IAccessible2, (void**)&pIAcc2);
  if((SUCCEEDED(hr)) && (pIAcc2))
  {
    // success
  }
  else
  {
    // failed (always shows this line of code)
  }
}

Please help.

Thanks,
R-VR

Comment 5

[Rajesh VR]

(In reply to rajeshcode from comment #4)
> (In reply to Trevor Saunders (:tbsaunde) from comment #3)
> > Without actually debugging the only thing I can imagine could wrong in that
> > test is we end up calling the wrong (xpcom QueryInterface() instead of the
> > one for mscom.
> 
> Hi Trevor Saunders,
> 
> I'm using MSCom QueryInterface() not xpcom QueryInterface(). And more sample
> codes are:
> 
> IAccessible2 *pIAcc2 = NULL;
> IAccessible *pIAccParentTab = NULL;
> IServiceProvider *pService = NULL;
> 
> // Finding Accessible for parent object (pIAccParentTab).
> 
> hr = pIAccParentTab->QueryInterface(IID_IServiceProvider, (void
> **)&pService);
> if(SUCCEEDED(hr) && (pService))
> {
>   hr = pService->QueryService(IID_IAccessible, IID_IAccessible2,
> (void**)&pIAcc2);
>   if((SUCCEEDED(hr)) && (pIAcc2))
>   {
>     // success
>   }
>   else
>   {
>     // failed (always shows this line of code)
>   }
> }
> 
The above code successfully working for Mozilla version less than 18.0(beta).
> Please help.
> 
> Thanks,
> R-VR

Comment 6

[alexander :surkov (:asurkov)]

(In reply to rajeshcode from comment #4)
> (In reply to Trevor Saunders (:tbsaunde) from comment #3)
> > Without actually debugging the only thing I can imagine could wrong in that
> > test is we end up calling the wrong (xpcom QueryInterface() instead of the
> > one for mscom.
> 
> Hi Trevor Saunders,
> 
> I'm using MSCom QueryInterface() not xpcom QueryInterface(). And more sample
> codes are:

I believe Trevor meant our internal implementation.

Do you have sources of some demo app I can build on my machine and use for debugging?

Comment 7

[Wayne Mery (:wsmwk)]

rajeshcode has not replied to comment 6

Comment 8

[Phoenix]

Resolved per whiteboard