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问题描述

嗨!

我编译32位可执行文件,并在64位计算机上运行(Windows 10)

I compile 32 bit executable, and run it on a 64-bit machine (Windows 10)

I调用函数  SHGetKnownFolderItem来获取FOLDERID_AppUpdates的已知文件夹,但是,我得到E_INVALIDARG

I call the function SHGetKnownFolderItem to get the known folder of FOLDERID_AppUpdates, However, I get E_INVALIDARG

在x64中它可以正常工作。我有限制以32位编译它。

In x64 it works fine. I have limitation to compile it in 32-bit.

我之所以选择该选项是因为它是最快的。

I chose that option because it was the fastest.

代码:

void ViewInstalledUpdates()
{
	using namespace std;
	HRESULT hr = CoInitialize(NULL);
	int count = 0;

	if (SUCCEEDED(hr))
	{
		CComPtr<IShellItem> pUpdates;
		CComPtr<IEnumShellItems> pShellEnum;

		hr = SHGetKnownFolderItem(FOLDERID_AppUpdates, static_cast<KNOWN_FOLDER_FLAG>(0), nullptr, IID_PPV_ARGS(&pUpdates));
		hr = pUpdates->BindToHandler(nullptr, BHID_EnumItems, IID_PPV_ARGS(&pShellEnum));
		if (pShellEnum)
		{
			do {
				CComPtr<IShellItem> pItem;
				CComHeapPtr<WCHAR> szName;

				hr = pShellEnum->Next(1, &pItem, nullptr);
				if (pItem)
				{
					HRESULT hres = pItem->GetDisplayName(SIGDN_NORMALDISPLAY, &szName);
					std::wcout << static_cast<LPWSTR>(szName) << endl;
					count++;
				}
			} while (hr == S_OK);
		}
	}
	CoUninitialize();
	std::wcout << L"Found " << count << " updates" << endl;
	return;
}

我有什么办法让它有效吗? 

Is there something I can do to make it works? 

提前谢谢你,

Tom

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09-09 06:10