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我正在使用C++編寫Firefox擴展。在C++中獲取標籤URL
我正在枚舉這些標籤以獲取它們各自的URL。
以下是僞代碼：
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);
}
在上面的代碼的QueryInterface獲得nsIBrowserBoxObject失敗，錯誤代碼：NS_ERROR_NO_INTERFACE。
請向我推薦獲取標籤網址的方法。
幫幫我!!!
謝謝， Vaibhav。