Re: xmlRequest.onprogress questions

Michael Vincent van Rantwijk <[email protected]> Thu, 29 Sep 2005 20:25:24 +0200

Newsgroups	gmane.comp.mozilla.devel.xml
Organization	Another Netscape Collabra Server User
Message-ID	<[email protected]>

Christian Biesinger wrote:
> Michael Vincent van Rantwijk wrote:
>> Eh, how? Like this:
>>
>> aEvent.QueryInterface(Components.interfaces.nsIDOMLSProgressEvent).position 
>>
> 
> Yes.

I got this error:

Error: [JavaScript Error: "[Exception... "Could not convert JavaScript 
argument (NULL value cannot
be used for a C++ reference type) arg 0 [nsISupports.QueryInterface]" 
nsresult:
"0x8057000b (NS_ERROR_XPC_BAD_CONVERT_JS_NULL_REF)"  location: "JS frame 
:: ...

so I checked nsIDOMLSProgressEvent but that is undefined!

Michael