EwfLevelDescriptor Class (Standard 7 SP1)
7/8/2014
The EwfLevelDescriptor class contains information about ended overlay levels of volumes protected by the Enhanced Write Filter.
The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties.
Syntax
class EwfLevelDescriptor
{
sint64 DataSize;
string DriveLetter;
datetime EndTime;
uint32 Index;
string Name;
string VolumeName;
};
Members
The EwfLevelDescriptor class defines the following types of members:
- Properties
Properties
The EwfLevelDescriptor class defines the following properties.
DataSize
Data type: sint64
Access type: Read-only
Returns the size of the data in the ended level, in bytes.
DriveLetter
Data type: string
Access type: Read-only
Returns the drive letter of the volume using the ended overlay level.
EndTime
Data type: datetime
Access type: Read-only
Returns the time when the overlay level ended.
Index
Data type: uint32
Access type: Read-only
Qualifiers: Key
Returns the index of the ended overlay level.
Name
Data type: string
Access type: Read-only
Returns the name of the ended overlay level. It contains a string of up to 64 characters.
VolumeName
Data type: string
Access type: Read-only
Qualifiers: Key
Returns the name of the volume using the ended overlay level. It contains a string of up to 256 characters. If more than one volume shares the same level, there will be a level descriptor object for each of them.
Remarks
When querying for property values with a uint64 or sint64 data type in a scripting language such as VBScript, WMI returns string values. Unexpected results can occur when comparing these values, because comparing strings returns different results than comparing numbers. For example, "10000000000" is less than "9" when comparing strings, and 9 is less than 10000000000 when comparing numbers. To avoid confusion you should use the CDbl method in VBScript when properties of type uint64 or sint64 are retrieved from WMI.
Requirements
Supported clients |
Windows XP Embedded SP3 |
MOF |
EWFProvider.mof |
Namespace |
\root\Microsoft\WriteFilters |