RegOpenUserClassesRoot失败，并显示“系统找不到指定的文件". [英] RegOpenUserClassesRoot fails with "system cannot find the specified file"

问题描述

我想在我的atl Windows服务中的HKEY_CLASSES_ROOT下访问一些子项.
msdn如下所示:

服务不应访问HKEY_CURRENT_USER或HKEY_CLASSES_ROOT，尤其是在模拟用户时.而应使用RegOpenCurrentUser或RegOpenUserClassesRoot函数.

如果您尝试从服务访问HKEY_CURRENT_USER或HKEY_CLASSES_ROOT，则它可能会失败，或者似乎可以正常工作，但是存在潜在的泄漏，可能导致加载或卸载用户配置文件时出现问题.
"

因此，我使用OpenProcessToken()获取该进程的令牌，然后调用RegOpenUserClassesRoot()尝试获取对HKEY_CLASSES_ROOT密钥的访问.但是调用失败，错误为0x00000002，提示系统找不到指定的文件".

有人知道为什么这个电话失败了吗?以及如何在我的atl服务中访问HKEY_CLASSES_ROOT?

I wanna access some subkey under HKEY_CLASSES_ROOT in my atl windows service.
the msdn says below:

"A service should not access HKEY_CURRENT_USER or HKEY_CLASSES_ROOT, especially when impersonating a user. Instead, use the RegOpenCurrentUser or RegOpenUserClassesRoot function.

If you attempt to access HKEY_CURRENT_USER or HKEY_CLASSES_ROOT from a service it may fail, or it may appear to work but there is an underlying leak that can lead to problems loading or unloading the user profile.
"

So I use OpenProcessToken() to get token of the process, then call RegOpenUserClassesRoot() to try to get access to the HKEY_CLASSES_ROOT key. But the call fails with error 0x00000002, says "system cannot find the specified file".

anyone got any idea why this call fails? and how i can access HKEY_CLASSES_ROOT in my atl service?

thanks.

推荐答案

如何使用HKLM\software\classes作为HKCR的笔名?
我不知道从服务访问HKCR可能存在问题.我的服务在HKLM

How about using HKLM\software\classes as a pseudonym for HKCR ?

I wasn''t aware there was a potential problem accessing the HKCR from services; I have services that are continually battering away at HKLM

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