The IID of nsIDOMHTMLInputElement changed from Gecko 16 to Gecko 17.  You
are probably compiling against headers for Gecko 16.

- Kyle
On Nov 19, 2012 7:10 AM, "Pelota" <immonikolausneuh...@googlemail.com>
wrote:

> I have an IDOMNode
>     nsCOMPtr_IDOMNode elementNode;
>
> from which I can get the node name without problems ("INPUT", "FIELDSET",
> ...)
>     nsString strName;
>     elementNode->GetNodeName(strName);
>
> Since Gecko 17 I have the problem, that I cannot get the HTML Input
> Element Interface for this node:
>     nsCOMPtr<nsIDOMHTMLInputElement> pHTMLInputElement;
>
>     pHTMLInputElement = do_QueryInterface(elementNode);
>     if(pHTMLInputElement) {
>
> This works fine with < Gecko 16. Any Ideas or known bugs? Did something
> change between Gecko 16 to 17?
>
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>
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