Question

我正在使用WMI查询在USB设备插入或拔出时接收事件。

SELECT * FROM __InstanceOperationEvent WITHIN 1 WHERE TargetInstance ISA 'Win32_USBControllerDevice'

根据收到的事件，我正在使用Dependent对象获取Win32_PnPEntity。

问题是，对于几乎任何物理设备，至少有两个逻辑设备。所以我收到的数据如下：

Device unplugged: LPK25
Device unplugged: USB Composite Device
Device plugged: LPK25
instance of Win32_PnPEntity
{
        Caption = "LPK25";
        ClassGuid = "{4d36e96c-e325-11ce-bfc1-08002be10318}";
        CompatibleID = {"USB\\Class_01&SubClass_01&Prot_00", "USB\\Class_01&SubClass_01", "USB\\Class_01"};
        ConfigManagerErrorCode = 0;
        ConfigManagerUserConfig = FALSE;
        CreationClassName = "Win32_PnPEntity";
        Description = "USB Audio Device";
        DeviceID = "USB\\VID_09E8&PID_0076&MI_00\\6&383464A1&0&0000";
        HardwareID = {"USB\\VID_09E8&PID_0076&REV_0100&MI_00", "USB\\VID_09E8&PID_0076&MI_00"};
        Manufacturer = "(Generic USB Audio)";
        Name = "LPK25";
        PNPDeviceID = "USB\\VID_09E8&PID_0076&MI_00\\6&383464A1&0&0000";
        Service = "usbaudio";
        Status = "OK";
        SystemCreationClassName = "Win32_ComputerSystem";
        SystemName = "COMPUTER";
};

Device plugged: USB Composite Device
instance of Win32_PnPEntity
{
        Caption = "USB Composite Device";
        ClassGuid = "{36fc9e60-c465-11cf-8056-444553540000}";
        CompatibleID = {"USB\\DevClass_00&SubClass_00&Prot_00", "USB\\DevClass_00&SubClass_00", "USB\\DevClass_00", "USB\\COMPOSITE"};
        ConfigManagerErrorCode = 0;
        ConfigManagerUserConfig = FALSE;
        CreationClassName = "Win32_PnPEntity";
        Description = "USB Composite Device";
        DeviceID = "USB\\VID_09E8&PID_0076\\5&385A3465&0&2";
        HardwareID = {"USB\\VID_09E8&PID_0076&REV_0100", "USB\\VID_09E8&PID_0076"};
        Manufacturer = "(Standard USB Host Controller)";
        Name = "USB Composite Device";
        PNPDeviceID = "USB\\VID_09E8&PID_0076\\5&385A3465&0&2";
        Service = "usbccgp";
        Status = "OK";
        SystemCreationClassName = "Win32_ComputerSystem";
        SystemName = "COMPUTER";
};

显然，这些LPK25是真正的设备，而USB复合设备是一些伪实体。对于鼠标，我得到四个实体。对于游戏控制器三等那么我如何弄清楚哪一个是“真实的东西？”

Answer 1

根据我的理解，你正在制造混乱，对我而言，你收到两件事是正常的。这是因为出现了两个新对象。

您的低级别对象usbccgp是USB音频的低级驱动程序。
支持音频硬件的高级对象。

我认为您必须按服务进行过滤，例如我使用USB密钥进行测试，我有两个事件，一个用于USBSTOR（低级别），另一个用于disk（高水平）。

解析WMI中Win32_PnPEntities的层次结构

1 个答案: