BcdElementType structure
Describes the layout of the BCD element types.
Syntax
typedef struct {
union {
ULONG PackedValue;
struct {
ULONG SubType :24;
ULONG Format :4;
ULONG Class :4;
};
};
} BcdElementType;
Members
-
PackedValue
-
SubType
-
Class-specific subtype for the data. The valid values differ based on class.
-
Format
-
Describes the data format for elements of this type.
Value Meaning - Device
- 0x1
A boot environment device, represented as a GUID in string format. For example "{500ec897-0b25-449a-8ecd-8d81628baa9c}". - String
- 0x2
A NULL-terminated Unicode string. - Object
- 0x3
A GUID in string format. - ObjectList
- 0x4
An array of GUIDs. - Integer
- 0x5
A 64-bit integer. - Boolean
- 0x6
A boolean. - IntegerList
- 0x7
An array of 64-bit integers. -
Class
-
Describes the consumer of the element type.
Value Meaning - Library
- 0x1
Element types that span both applications and devices. Elements of this class can only contain other Library class BCD elements. - Application
- 0x2
Element types specific to a boot applications. - Device
- 0x3
Element types specific to a boot device. - OEM
- 0x5
Element types specific to an Original Equipment Manufacturer (OEM).
Requirements
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2008 [desktop apps only] |