STATE_LOCATION_TYPE - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTRTL_H

//
// State isolation
//

typedef enum _STATE_LOCATION_TYPE
{
    LocationTypeRegistry,
    LocationTypeFileSystem,
    LocationTypeMaximum
} STATE_LOCATION_TYPE;

#endif

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This enumeration is documented in Windows Driver Kit.