WINSETUPAPI BOOL SetupDiClassGuidsFromNameA( PCSTR ClassName,
LPGUID ClassGuidList,
DWORD ClassGuidListSize,
PDWORD RequiredSize );
SetupDiClassGuidsFromName函数检索与指定类名关联的GUID。
ClassName:要检索的GUID的类名字;
ClassGuidList:一个数组的指针,以获得与指定类名称关联的GUID列表;
ClassGuidListSize:ClassGuidList列表数组中GUID的数量;
RequiredSize :提供一个指向变量的指针,该变量接收与类名关联的guid数。如果这个数字大于ClassGuidList缓冲区的大小,那么这个数字表示为了存储所有的guid,数组必须有多大。
如何调用成功返回TRUE,失败返回FALSE;
WINSETUPAPI HDEVINFO SetupDiGetClassDevsW( const GUID *ClassGuid,
PCWSTR Enumerator,
HWND hwndParent,
DWORD Flags );
该函数返回一个设备信息集的句柄看,该设备信息集包含本地计算机所请求的设备信息元素。
参数:
ClassGuid:一个指向设备安装类或设备接口类的GUID的指针;该指针是随意的也可以为空。
Enumerator:一个指向空字符结尾的字符串,列举如下:
即插即用设备枚举树的ID,此ID既可以是全局唯一标识符(GUID)也可以是符号名称。比如:“PCI”可以用于指定PCI的PnP值,符号名称则包括像“USB”,“PCMCIA”和“SCSI”这样的Pnp值。
一个PnP设备句柄ID。当指定了一个PnP设备句柄ID时,DIGCF_DEVICEINTERFACE必须在Flag参数上被设置。
hwndParent:用于与在设备信息集中安装设备实例相关联的用户界面的顶级窗口句柄。该句柄是可选的,并且可以为NULL。
Flags : Flags是一个DWORD类型的变量,通过此参数来过滤指定的设备信息集中的设备。此参数可以是以下标志位中的一个或多个的按位或组合。
DIGCF_ALLCLASSES
返回所有已安装设备的列表或所有设备接口类。
DIGCF_DEVICEINTERFACE
返回支持指定设备接口类的设备。如果Enumerators参数制定了设备的实例ID,那么必须在Flags参数中设置此标志位。
DIGCF_DEFAULT
对于指定的设备接口类,只返回与系统默认设备接口相关联的设备(如果已设置的话)。
DIGCF_PRESENT
只返回当前系统中存在的(已连接)设备。
DIGCF_PROFILE
只返回当前硬件列表中的一部分设备。
如果调用成功,SetupDiGetClassDevs将返回一个设备信息集的句柄,该句柄包含了与所提供参数所匹配的所有设备。如果调用失败,函数返回INVALID_HANDLE_VALUE。要进一步获取错误信息,请调用GetLastError。
WINSETUPAPI BOOL SetupDiEnumDeviceInfo( HDEVINFO DeviceInfoSet,
DWORD MemberIndex,
PSP_DEVINFO_DATA DeviceInfoData );
功能:返回一个SP_DEVINFO_DATA结构体,这个结构体是在一个设备信息集中指定的一个设备信息元素
反复的调用该函数会返回不同设备的设备信息元素。
枚举设备信息元素,最初调用该函数时要将MemberIndex参数设置为0,然后每次调用递增MemberIndex参数的值,直到没有更多设备的设备信息元素返回(即
SetupDiEnumDeviceInfo函数调用失败,使用GetLastError函数会返回ERROR_NO_MORE_ITEMS);
DeviceInfoSet:设备信息集的句柄,用于返回表示设备信息元素的PSP_DEVINFO_DATA 数据结构。
MemberIndex:要检索的从零开始的设备信息元素。
DeviceInfoData :指向PSP_DEVINFO_DATA 数据结构的指针,用于接收关于枚举设备信息元素的信息。调用者必须设置DeviceInfoData。
cbSize设置成sizeof(PSP_DEVINFO_DATA )。
如果成功返回TRUE,失败返回FALSE;
WINSETUPAPI BOOL SetupDiGetDeviceRegistryPropertyA( HDEVINFO DeviceInfoSet,
PSP_DEVINFO_DATA DeviceInfoData,
DWORD Property,
PDWORD PropertyRegDataType,
PBYTE PropertyBuffer,
DWORD PropertyBufferSize,
PDWORD RequiredSize );
该函数用于检索一个指定的即插即用设备的属性;
DeviceInfoSet:指向一个设备信息集的指针,表示要检索即插即用属性的设备。
DeviceInfoData:一个PSP_DEVINFO_DATA 结构体,指定DeviceInfoSet中的设备信息元素。
Property:以下要被检索的指定属性:
The function retrieves the device's address.
The function retrieves the device's bus number.
The function retrieves the GUID for the device's bus type.
The function retrieves a bitwise OR of the following CM_DEVCAP__Xxx_ flags in a DWORD. The device capabilities that are represented by these flags correspond to the device capabilities that are represented by the members of the DEVICE_CAPABILITIES structure. The CM_DEVCAP_Xxx constants are defined in Cfgmgr32.h.
CM_DEVCAP_Xxx flag
Corresponding DEVICE_CAPABILITIES structure member
CM_DEVCAP_LOCKSUPPORTED
LockSupported
CM_DEVCAP_EJECTSUPPORTED
EjectSupported
CM_DEVCAP_REMOVABLE
Removable
CM_DEVCAP_DOCKDEVICE
DockDevice
CM_DEVCAP_UNIQUEID
UniqueID
CM_DEVCAP_SILENTINSTALL
SilentInstall
CM_DEVCAP_RAWDEVICEOK
RawDeviceOK
CM_DEVCAP_SURPRISEREMOVALOK
SurpriseRemovalOK
CM_DEVCAP_HARDWAREDISABLED
HardwareDisabled
CM_DEVCAP_NONDYNAMIC
NonDynamic
The function retrieves a bitwise OR of a device's characteristics flags in a DWORD. For a description of these flags, which are defined in Wdm.h and Ntddk.h, see the DeviceCharacteristics parameter of the IoCreateDevice function.
The function retrieves a REG_SZ string that contains the device setup class of a device.
The function retrieves a REG_SZ string that contains the GUID that represents the device setup class of a device.
The function retrieves a REG_MULTI_SZ string that contains the list of compatible IDs for a device. For information about compatible IDs, see Device Identification Strings.
The function retrieves a bitwise OR of a device's configuration flags in a DWORD value. The configuration flags are represented by the CONFIGFLAG__Xxx_ bitmasks that are defined in Regstr.h.
(Windows XP and later) The function retrieves a CM_POWER_DATA structure that contains the device's power management information.
The function retrieves a REG_SZ string that contains the description of a device.
The function retrieves a DWORD value that represents the device's type. For more information, see Specifying Device Types.
The function retrieves a string that identifies the device's software key (sometimes called the driver key). For more information about driver keys, see Registry Trees and Keys for Devices and Drivers.
The function retrieves a REG_SZ string that contains the name of the device's enumerator.
The function retrieves a DWORD value that indicates whether a user can obtain exclusive use of the device. The returned value is one if exclusive use is allowed, or zero otherwise. For more information, see IoCreateDevice.
The function retrieves a REG_SZ string that contains the friendly name of a device.
The function retrieves a REG_MULTI_SZ string that contains the list of hardware IDs for a device. For information about hardware IDs, see Device Identification Strings.
(Windows XP and later) The function retrieves a DWORD value that indicates the installation state of a device. The installation state is represented by one of the CM_INSTALL_STATE__Xxx_values that are defined in Cfgmgr32.h. The CM_INSTALL_STATE__Xxx_ values correspond to the DEVICE_INSTALL_STATE enumeration values.
The function retrieves the device's legacy bus type as an INTERFACE_TYPE value (defined in Wdm.h and Ntddk.h).
The function retrieves a REG_SZ string that contains the hardware location of a device.
(Windows Server 2003 and later) The function retrieves a REG_MULTI_SZ string that represents the location of the device in the device tree.
The function retrieves a REG_MULTI_SZ string that contains the names of a device's lower-filter drivers.
The function retrieves a REG_SZ string that contains the name of the device manufacturer.
The function retrieves a REG_SZ string that contains the name that is associated with the device's PDO. For more information, see IoCreateDevice.
(Windows XP and later) The function retrieves the device's current removal policy as a DWORD that contains one of the CM_REMOVAL_POLICY__Xxx_ values that are defined in Cfgmgr32.h.
(Windows XP and later) The function retrieves the device's hardware-specified default removal policy as a DWORD that contains one of the CM_REMOVAL_POLICY__Xxx_ values that are defined in Cfgmgr32.h.
(Windows XP and later) The function retrieves the device's override removal policy (if it exists) from the registry, as a DWORD that contains one of the CM_REMOVAL_POLICY__Xxx_ values that are defined in Cfgmgr32.h.
The function retrieves a SECURITY_DESCRIPTOR structure for a device.
The function retrieves a REG_SZ string that contains the device's security descriptor. For information about security descriptor strings, see Security Descriptor Definition Language (Windows). For information about the format of security descriptor strings, see Security Descriptor Definition Language (Windows).
The function retrieves a REG_SZ string that contains the service name for a device.
The function retrieves a DWORD value set to the value of the UINumber member of the device's DEVICE_CAPABILITIES structure.
The function retrieves a format string (REG_SZ) used to display the UINumber value.
The function retrieves a REG_MULTI_SZ string that contains the names of a device's upper filter drivers.
PropertyRegDataType:指向一个变量的指针,该变量接收正在检索的属性的数据类型。这是标准注册表数据类型之一。此参数是可选的,可以为空。
PropertyBuffer:一个指向缓冲区的指针,该缓冲区接收要检索的属性。如果将该参数设置为NULL,并将PropertyBufferSize设置为0,则函数将在RequiredSize中返回 缓冲区所需的大小。
PropertyBufferSize:属性缓冲区大小;
RequiredSize:指向类型为DWORD的变量的指针,该变量接收PropertyBuffer缓冲区所需大小(以字节为单位),该缓冲区用于保存所请求属性的数据。此参数是可选 的,可以为空
如果调用成功返回TRUE,失败返回FALSE;
WINSETUPAPI HKEY SetupDiOpenDevRegKey( HDEVINFO DeviceInfoSet,
PSP_DEVINFO_DATA DeviceInfoData,
DWORD Scope,
DWORD HwProfile,
DWORD KeyType,
REGSAM samDesired );
SetupDiOpenDevRegKey函数为特定设备的配置信息打开注册表项。
参数:
DeviceInfoSet:设备信息集的句柄,该句柄包含一个设备信息元素,该元素表示要为其打开注册表项的设备。
DeviceInfoData:一个指向SP DEVINFO数据结构的指针,该结构指定DeviceInfoSet中的设备信息元素。
Scope:要打开的注册表项的范围。范围决定信息存储在何处。范围可以是全局的,也可以是特定于硬件配置文件的。范围由下列值之一指定:
打开存储全局配置信息的键值项。此信息并不特定于特定的硬件配置文件。这将打开一个根在 HKEY_LOCAL_MACHINE。打开的确切键取决于KeyType的值。
打开存储特定于硬件概要文件的配置信息的键值项。此键根植于硬件配置文件特定的分支之一,而不是HKEY_LOCAL_MACHINE。打开的确切键取决于KeyType的值。
HwProfile:硬件配置文件值,设置如下:
If Scope is set to DICS_FLAG_CONFIGSPECIFIC, HwProfile specifies the hardware profile of the key that is to be opened.
If HwProfile is 0, the key for the current hardware profile is opened.
If Scope is DICS_FLAG_GLOBAL, HwProfile is ignored.
(如果HwProfile为0,打开当前硬件配置文件的键。)
KeyType:要打开的注册表存储键的类型,可以是以下值之一:
Open a hardware key for the device.
Open a software key for the device.
For more information about a device's hardware and software keys, see Registry Trees and Keys for Devices and Drivers.
samDesired:请求的键值项所需的注册表安全访问。
如果函数成功,它将返回打开的注册表项的句柄,其中可以存储/检索关于此设备实例的私有配置数据。
如果失败返回INVALID_HANDLE_VALUE。
RegQueryValueEx(E)函数
函数RegQueryValueEx找回一个打开的注册表键值相关联的给定的变量数据或者变量。
LONG RegQueryValueEx(
HKEY hKey, // handle to key 主键句柄
LPCTSTR lpValueName, // value name 子键名称
LPDWORD lpReserved, // reserved 保留
LPDWORD lpType, // type buffer
LPBYTE lpData, // data buffer 存储返回值的缓冲区
LPDWORD lpcbData // size of data buffer存储返回值的缓冲区的大小
);
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作者:ju_feng
来源:CSDN
原文:https://blog.csdn.net/ju_feng/article/details/6459
版权声明:本文为博主原创文章,转载请附上博文链接!
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