等同于“扫描硬件更改”；安装失败后在设备管理器中无法正常工作 [英] Equivalent of "Scan For Hardware Changes" in device manager doesn't work after failed installation

问题描述

根据 docs C ++函数 CfgMgr32.dll 的CM_Locate_DevNodeA 和 CM_Reenumerate_DevNode 应该与菜单项在设备管理器中扫描更改的硬件。

According to the docs the C++ functions CM_Locate_DevNodeA and CM_Reenumerate_DevNode of CfgMgr32.dll should be the programatical equivalant to the menu item scan for changed hardware in the device manager.

请参见针对C＃中托管代码的第二个问题。

但是与文档相反，程序化方法设备管理器操作有效时，它并不总是起作用。这是我的情况：

But in contrary to the docs, the programmatical approach doesn't work always, when the Device manager operation works. This is my case:

1. 用户已插入USB设备

1. User already plugged in the USB device

找不到驱动程序

我的安装程序将正确的INF文件添加到
Windows / inf目录

My installer adds the right INF-File into the Windows/inf directory

CM_Reenumerate_DevNode 不会导致安装新驱动程序

CM_Reenumerate_DevNode doesn't cause the installation of the new driver

在设备管理器中，Wheras扫描硬件更改使用新的驱动程序开始
安装

Wheras "Scan for hardware changes" in device manager starts the installation with the new driver

推荐答案

在尝试编写C ++代码以复制设备管理器的扫描硬件命令时，我遇到了类似的问题。

I had a similar issue trying to write C++ code to replicate the Device Manager's Scan For Hardware command.

我尝试使用 https://support.microsoft.com/en-us/kb/259697 。

但是，它没有用。我注意到 CM_Reenumerate_DevNode 返回了 CR_ACCESS_DENIED ，它是 #define CR_ACCESS_DENIED（0x00000033）//仅NT Cfgmrg32.h 中的。

However, it didn't work. I noticed CM_Reenumerate_DevNode returned CR_ACCESS_DENIED, which is #define CR_ACCESS_DENIED (0x00000033) // NT ONLY in Cfgmrg32.h.

根据 CM_Reenumerate_DevNode函数，此函数的调用者需要 SeLoadDriverPrivilege 。

According to CM_Reenumerate_DevNode function, callers of this function need SeLoadDriverPrivilege.

为了避免在代码中设置此特权，我通过右键单击以管理员身份运行.exe。 exe，然后选择以管理员身份运行。

To get around setting this privilege in code, I ran the .exe as an administrator by right-clicking on .exe and selecting Run as administratror.

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