SetupDiOpenClassRegKeyEx function
The SetupDiOpenClassRegKeyEx function opens the device setup class registry key, the device interface class registry key, or a specific class's subkey. This function opens the specified key on the local computer or on a remote computer.
Syntax
HKEY SetupDiOpenClassRegKeyEx(
_In_opt_ const GUID *ClassGuid,
_In_ REGSAM samDesired,
_In_ DWORD Flags,
_In_opt_ PCTSTR MachineName,
_Reserved_ PVOID Reserved
);
Parameters
- ClassGuid [in, optional]
-
A pointer to the GUID of the class whose registry key is to be opened. This parameter is optional and can be NULL. If this parameter is NULL, the root of the class tree (HKLM\SYSTEM\CurrentControlSet\Control\Class) is opened.
- samDesired [in]
-
The registry security access for the key to be opened. For information about registry security access values of type REGSAM, see the Microsoft Windows SDK documentation.
- Flags [in]
-
The type of registry key to be opened, which is specified by one of the following:
- MachineName [in, optional]
-
Optionally points to a string that contains the name of a remote computer on which to open the specified key.
- Reserved
-
Reserved. Must be NULL.
Return value
SetupDiOpenClassRegKeyEx returns a handle to an opened registry key where information about this setup class can be stored/retrieved.
If the function fails, it returns INVALID_HANDLE_VALUE. To get extended error information, call GetLastError.
Remarks
Depending on the value that is passed in the samDesired parameter, it might be necessary for the caller of this function to be a member of the Administrators group.
SetupDiOpenClassRegKeyEx does not create a registry key if it does not already exist.
Callers of this function must close the handle returned from this function by calling RegCloseKey.
Requirements
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Available in Microsoft Windows 2000 and later versions of Windows. |
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See also