RtlCheckRegistryKey

The RtlCheckRegistryKey routine checks for the existence of a given named key in the registry.

NTSTATUS 
  RtlCheckRegistryKey(
    IN ULONG  RelativeTo,
    IN PWSTR  Path
    );

Parameters

RelativeTo

Specifies whether Path is an absolute registry path or is relative to a predefined key path as one of the following.

Value	Meaning
RTL_REGISTRY_ABSOLUTE
	Path is an absolute registry path.
RTL_REGISTRY_SERVICES
	Path is relative to \Registry\Machine\System\CurrentControlSet\Services.
RTL_REGISTRY_CONTROL
	Path is relative to \Registry\Machine\System\CurrentControlSet\Control.
RTL_REGISTRY_WINDOWS_NT
	Path is relative to \Registry\Machine\Software\Microsoft\ Windows NT\CurrentVersion.
RTL_REGISTRY_DEVICEMAP
	Path is relative to \Registry\Machine\Hardware\DeviceMap.
RTL_REGISTRY_USER
	Path is relative to \Registry\User\CurrentUser. (For a system process, this is \Users\.Default.)
RTL_REGISTRY_OPTIONAL
	Specifies that the key referenced by this parameter and the Path parameter are optional.
RTL_REGISTRY_HANDLE
	Specifies that the Path parameter is actually a registry handle to use. This value is optional.

Path

Specifies the registry path according to the RelativeTo value. If RTL_REGISTRY_HANDLE is set, Path is a handle to be used directly.

Return Value

If the given named key exists in the registry along the given relative path, RtlCheckRegistryKey returns STATUS_SUCCESS.

Headers

Declared in ntddk.h. Include ntddk.h.

Comments

Callers of RtlCheckRegistryKey must be running at IRQL = PASSIVE_LEVEL.

See Also

RtlQueryRegistryValues