Re: How can I get the 'width' and 'height' of an

[email protected] wrote:
> Hi,
> 
> I use the following code to get and print the width and height
> attribute of a nsIDOMNSHTMLElement.
> 
> But I only get 'empty' string.   I am sure that the source has 'width'
> and 'height' attribute.  Can you please tell me what am i missing?
> 
> Thank you.
> 
> 
>     nsIDOMNSHTMLElement* element;
> 
>    nsCOMPtr<nsIDOMElement> domElement = do_QueryInterface(element);
> 
>     if (domElement) {
>       nsAutoString width;
>       nsAutoString height;
> 
>       domElement->GetAttribute(NS_LITERAL_STRING("width"), width) ;
>       domElement->GetAttribute(NS_LITERAL_STRING("height"), height) ;
> 
>       printf("w:%s:\n", width.get());
>       printf("h:%s:\n", height.get());
> 
> }

nsAutoStrings are UTF16, printf expects an ASCII string. Try doing

printf("w:%s:\n", NS_LossyConvertUTF16toASCII(width).get());

Do note that this won't properly print non-ascii characters, but I don't 
think there is a way to get printf to do so.

/ Jonas