C++ COMPtr::forwardListCount方法代码示例

本文整理汇总了C++中COMPtr::forwardListCount方法的典型用法代码示例。如果您正苦于以下问题：C++ COMPtr::forwardListCount方法的具体用法？C++ COMPtr::forwardListCount怎么用？C++ COMPtr::forwardListCount使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类COMPtr的用法示例。

在下文中一共展示了COMPtr::forwardListCount方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: dumpBackForwardList

static void dumpBackForwardList(IWebView* webView)
{
    ASSERT(webView);

    printf("\n============== Back Forward List ==============\n");

    COMPtr<IWebBackForwardList> bfList;
    if (FAILED(webView->backForwardList(&bfList)))
        return;

    // Print out all items in the list after prevTestBFItem, which was from the previous test
    // Gather items from the end of the list, the print them out from oldest to newest

    Vector<COMPtr<IUnknown> > itemsToPrint;

    int forwardListCount;
    if (FAILED(bfList->forwardListCount(&forwardListCount)))
        return;

    for (int i = forwardListCount; i > 0; --i) {
        COMPtr<IWebHistoryItem> item;
        if (FAILED(bfList->itemAtIndex(i, &item)))
            return;
        // something is wrong if the item from the last test is in the forward part of the b/f list
        assert(item != prevTestBFItem);
        COMPtr<IUnknown> itemUnknown;
        item->QueryInterface(&itemUnknown);
        itemsToPrint.append(itemUnknown);
    }
    
    COMPtr<IWebHistoryItem> currentItem;
    if (FAILED(bfList->currentItem(&currentItem)))
        return;

    assert(currentItem != prevTestBFItem);
    COMPtr<IUnknown> currentItemUnknown;
    currentItem->QueryInterface(&currentItemUnknown);
    itemsToPrint.append(currentItemUnknown);
    int currentItemIndex = itemsToPrint.size() - 1;

    int backListCount;
    if (FAILED(bfList->backListCount(&backListCount)))
        return;

    for (int i = -1; i >= -backListCount; --i) {
        COMPtr<IWebHistoryItem> item;
        if (FAILED(bfList->itemAtIndex(i, &item)))
            return;
        if (item == prevTestBFItem)
            break;
        COMPtr<IUnknown> itemUnknown;
        item->QueryInterface(&itemUnknown);
        itemsToPrint.append(itemUnknown);
    }

    for (int i = itemsToPrint.size() - 1; i >= 0; --i) {
        COMPtr<IWebHistoryItem> historyItemToPrint;
        itemsToPrint[i]->QueryInterface(&historyItemToPrint);
        dumpHistoryItem(historyItemToPrint.get(), 8, i == currentItemIndex);
    }

    printf("===============================================\n");
}

开发者ID:mikezit，项目名称:Webkit_Code，代码行数:63，代码来源:DumpRenderTree.cpp

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