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我正在使用C++编写Firefox扩展。在C++中获取标签URL
我正在枚举这些标签以获取它们各自的URL。
以下是伪代码：
nsCOMPtr<nsIWindowMediator> windowMediator = do_GetService(NS_WINDOWMEDIATOR_CONTRACTID, &rv);
windowMediator->GetMostRecentWindow(L"navigator:browser", getter_AddRefs(dwi));
dwi->GetDocument(getter_AddRefs(doc));
nsCOMPtr<nsIDOMDocumentXBL> xbl(do_QueryInterface(doc));
doc->GetElementById(NS_LITERAL_STRING("content"), getter_AddRefs(domEl));
nsCOMPtr<nsIDOMElement> pAnoEl;
xbl->GetAnonymousElementByAttribute(
domEl,
NS_LITERAL_STRING("anonid"),
NS_LITERAL_STRING("tabcontainer"),
getter_AddRefs(pAnoEl)
);
nsString retval;
PRBool bRet = 0;
nsCOMPtr<nsIDOMNodeList> nodeList;
pAnoEl->GetChildNodes(getter_AddRefs(nodeList));
nsCOMPtr<nsIDOMNode> domNode;
rv = nodeList->GetLength(&len);
for (PRUint32 i = 0; i < len; i++)
{
nodeList->Item(i, getter_AddRefs(domNode));
nsCOMPtr<nsIDOMXULElement> xulElement = do_QueryInterface(domNode);
nsCOMPtr<nsIBoxObject> boxObject;
xulElement->GetBoxObject(getter_AddRefs(boxObject));
nsCOMPtr<nsIBrowserBoxObject> browserboxObject = do_QueryInterface(boxObject);
}
在上面的代码的QueryInterface获得nsIBrowserBoxObject失败，错误代码：NS_ERROR_NO_INTERFACE。
请向我推荐获取标签网址的方法。
帮帮我!!!
谢谢， Vaibhav。