SHGetKnownFolderItem - Wow64的区别 [英] SHGetKnownFolderItem - Wow64 difference

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

推荐答案

作为解决方法，可以使用Windows Update API检索已安装的更新。 在我的x64系统上，它返回了x86和x64版本的已安装更新。

As a workaround, maybe use the Windows Update API to retrieve installed updates.  On my x64 system it returned installed updates for both x86 and x64 builds.

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