302029 - Interface Not Supported when QI IAccessible for ISimpleDOMNode

Status: RESOLVED INVALID

(Firefox :: Disability Access, defect)

Description

[Tim McHyde]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b4) Gecko/20050724 Firefox/1.0+
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b4) Gecko/20050724 Firefox/1.0+

This used to work in the Alpha 1 and 2 releases.  Now only ISimpleDOMText is
QIable from the IAccessible.

Reproducible: Always

Steps to Reproduce:
function GetGeckoFromPt(Pt: TPoint; var SimpleDOMText: ISimpleDOMText): Boolean;
var
  Acc: IAccessible;
  varChild: OleVariant;
  Node: ISimpleDOMNode;
begin
  Acc := GetAccessibleFromPt(Pt, varChild);  // succeeds
  SimpleDomText := Acc as ISimpleDOMText // succeeds
  SimpleDomNode := Acc as ISimpleDOMNode // fails
  SimpleDomNode := SimpleDOMText as ISimpleDOMNode // fails
end;

Actual Results:  
Interface Not Supported error


Expected Results:  
There should always be an ISimpleDOMNode if there is an ISimpleDOMText

i put blocker for severity because this bug is preventing me from developing my
accessible software for Mozilla

Comment 1

[Aaron Leventhal]

Avi, as I mentioned in an email I have changed ISimpleDOMNode.idl --if you
haven't updated that would match your problem.

Here's where the IDL is kept. It might change once more before 1.5 final but
then it will stay constant.

http://lxr.mozilla.org/seamonkey/source/accessible/public/msaa/ISimpleDOMNode.id?raw=1l

Comment 2

[Tim McHyde]

Thanks for the reminder, yes the interface and GUID changing explains this
perfectly which I forgot to do (sleep deprived weekend). I updated my TLB to
match the new interface and now there's no problem.  I'm closing the bug as
Invalid I guess fits best.