Msvm_VideoHead class

Describes the primary drawing surface on a display controller.

The following syntax is simplified Managed Object Format (MOF) code, and it includes all of the inherited properties.

Syntax

[Dynamic, Provider("VmmsWmiInstanceAndMethodProvider"), AMENDMENT]
class Msvm_VideoHead : CIM_VideoHead
{
  string   InstanceID;
  string   Caption = "Video Head";
  string   Description = "Microsoft Virtual Video Head";
  string   ElementName = "Video Head";
  datetime InstallDate;
  string   Name = "Video Head";
  uint16   OperationalStatus[] = { 2 };
  string   StatusDescriptions[] = { "OK" };
  string   Status;
  uint16   HealthState = 5;
  uint16   CommunicationStatus;
  uint16   DetailedStatus;
  uint16   OperatingStatus;
  uint16   PrimaryStatus;
  string   EnabledState = 3;
  string   OtherEnabledState;
  uint16   RequestedState = 12;
  uint16   EnabledDefault = 2;
  datetime TimeOfLastStateChange;
  uint16   AvailableRequestedStates[];
  uint16   TransitioningToState = 12;
  string   SystemCreationClassName = "Msvm_ComputerSystem";
  string   SystemName;
  uint16   CreationClassName = "Msvm_VideoHead";
  string   DeviceID;
  boolean  PowerManagementSupported;
  uint16   PowerManagementCapabilities[];
  uint16   Availability = 6;
  uint16   StatusInfo;
  uint32   LastErrorCode;
  string   ErrorDescription;
  boolean  ErrorCleared;
  string   OtherIdentifyingInfo[];
  uint64   PowerOnHours;
  uint64   TotalPowerOnHours;
  string   IdentifyingDescriptions[];
  uint16   AdditionalAvailability[] = { 6 };
  uint64   MaxQuiesceTime;
  uint32   CurrentBitsPerPixel;
  uint32   CurrentHorizontalResolution;
  uint32   CurrentVerticalResolution;
  uint32   MaxRefreshRate;
  uint32   MinRefreshRate;
  uint32   CurrentRefreshRate;
  uint16   CurrentScanMode;
  string   OtherCurrentScanMode;
  uint32   CurrentNumberOfRows;
  uint32   CurrentNumberOfColumns;
  uint64   CurrentNumberOfColors;
};

Members

The Msvm_VideoHead class has these types of members:

• Methods
• Properties

Methods

The Msvm_VideoHead class has these methods.

Method	Description
EnableDevice	This method is not supported.
OnlineDevice	This method is not supported.
QuiesceDevice	This method is not supported.
RequestStateChange	Requests a state change.
Reset	Resets the virtual device.
RestoreProperties	This method is not supported.
SaveProperties	This method is not supported.
SetPowerState	This method is not supported.

Properties

The Msvm_VideoHead class has these properties.

AdditionalAvailability

Data type: uint16 array

Access type: Read-only

Any additional availability and status of the device. This property is inherited from CIM_LogicalDevice, and it is set to 6 (Not Applicable).

Availability

Data type: uint16

Access type: Read-only

The primary availability and status of the device. This property is inherited from CIM_LogicalDevice.

Value	Meaning
6	Not Applicable

AvailableRequestedStates

Data type: uint16 array

Access type: Read-only

Indicates the possible values for the RequestedState parameter of the RequestStateChange method. This property is inherited from CIM_EnabledLogicalElement, and it is always set to Null.

Caption

Data type: string

Access type: Read-only

A short description of the object. This property is inherited from CIM_ManagedElement.

CommunicationStatus

Data type: uint16

Access type: Read-only

Indicates the ability of the instrumentation to communicate with the underlying managed element. A Null value indicates that this property is not implemented. This property is inherited from CIM_ManagedSystemElement.

Unknown (0)

Not Available (1)

Communication OK (2)

Lost Communication (3)

No Contact (4)

DMTF Reserved (..)

Vendor Reserved (0x8000.. )

CreationClassName

Data type: uint16

Access type: Read-only

The name of the class or subclass used in the creation of an instance. This property is inherited from CIM_LogicalDevice.

CurrentBitsPerPixel

Data type: uint32

Access type: Read-only

Qualifiers: Units ("Bits")

The number of bits used to display each pixel. This property is inherited from CIM_VideoHead.

CurrentHorizontalResolution

Data type: uint32

Access type: Read-only

Qualifiers: Units ("Pixels")

The current number of horizontal pixels. This property is inherited from CIM_VideoHead.

CurrentNumberOfColors

Data type: uint64

Access type: Read-only

The number of colors supported at the current resolutions. This property is inherited from CIM_VideoHead.

CurrentNumberOfColumns

Data type: uint32

Access type: Read-only

If in character mode, the number of columns for this display controller. Otherwise, 0. This property is inherited from CIM_VideoHead.

CurrentNumberOfRows

Data type: uint32

Access type: Read-only

If in character mode, the number of rows for this video controller. Otherwise, 0. This property is inherited from CIM_VideoHead.

CurrentRefreshRate

Data type: uint32

Access type: Read-only

Qualifiers: Units ("Hertz")

The current refresh rate, in hertz. This property is inherited from CIM_VideoHead.

CurrentScanMode

Data type: uint16

Access type: Read-only

The current scan mode. This property is inherited from CIM_VideoHead.

Unknown (0)

Other (1)

Not Supported (2)

Non-Interlaced Operation (3)

Interlaced Operation (4)

CurrentVerticalResolution

Data type: uint32

Access type: Read-only

Qualifiers: Units ("Pixels")

The current number of vertical pixels. This property is inherited from CIM_VideoHead.

Description

Data type: string

Access type: Read-only

A description of the object. This property is inherited from CIM_ManagedElement.

DetailedStatus

Data type: uint16

Access type: Read-only

Compliments the PrimaryStatus property with additional status detail. A Null value indicates that this property is not implemented. This property is inherited from CIM_ManagedSystemElement.

Not Available (0)

No Additional Information (1)

Stressed (2)

Predictive Failure (3)

Non-Recoverable Error (4)

Supporting Entity in Error (5)

DMTF Reserved (..)

Vendor Reserved (0x8000.. )

DeviceID

Data type: string

Access type: Read-only

This property is inherited from CIM_LogicalDevice, and it is set to "Microsoft:GUID\Head\Index".

ElementName

Data type: string

Access type: Read-only

A display name for the object. This property is inherited from CIM_ManagedElement.

EnabledDefault

Data type: uint16

Access type: Read-only

An administrator's default or startup configuration for the enabled state of an element. This property is inherited from CIM_EnabledLogicalElement, and it is always set to 2 (Enabled).

Value	Meaning
2	Enabled
3	Disabled

EnabledState

Data type: string

Access type: Read-only

The enabled and disabled states of an element. It can also indicate the transitions between these requested states. This property is inherited from CIM_EnabledLogicalElement.

Value	Meaning
2	Enabled
3	Disabled

ErrorCleared

Data type: boolean

Access type: Read-only

Indicates whether the error reported in LastErrorCode is now cleared. This property is inherited from CIM_LogicalDevice, but it is not used.

ErrorDescription

Data type: string

Access type: Read-only

A string that provides more information about the error recorded in LastErrorCode and information about any corrective actions that can be taken. This property is inherited from CIM_LogicalDevice, but it is not used.

HealthState

Data type: uint16

Access type: Read-only

The current health of the element. This attribute expresses the health of this element but not necessarily that of its subcomponents. The possible values are 0 to 30, where 5 means the element is entirely healthy and 30 means the element is completely nonfunctional. This property is inherited from CIM_ManagedSystemElement.

Value	Meaning
5	OK

IdentifyingDescriptions

Data type: string array

Access type: Read-only

An array of free-form strings that provide explanations and details behind the entries in the OtherIdentifyingInfo property array. This property is inherited from CIM_LogicalDevice, and it is set to Null.

InstallDate

Data type: datetime

Access type: Read-only

The date and time the virtual machine configuration was created. This property is inherited from CIM_ManagedSystemElement.

InstanceID

Data type: string

Access type: Read-only

Qualifiers: Key

Uniquely identifies an instance of this class. This property is inherited from CIM_ManagedElement.

LastErrorCode

Data type: uint32

Access type: Read-only

The last error code reported by the logical device. This property is inherited from CIM_LogicalDevice, but it is not used.

MaxQuiesceTime

Data type: uint64

Access type: Read-only

This property has been deprecated. This property is inherited from CIM_LogicalDevice.

MaxRefreshRate

Data type: uint32

Access type: Read-only

Qualifiers: Units ("Hertz")

The maximum refresh rate of the display controller, in hertz. This property is inherited from CIM_VideoHead.

MinRefreshRate

Data type: uint32

Access type: Read-only

Qualifiers: Units ("Hertz")

The minimum refresh rate of the video controller, in hertz. This property is inherited from CIM_VideoHead.

Name

Data type: string

Access type: Read-only

The label by which the object is known. This property is inherited from CIM_ManagedSystemElement, and it is the same as the ElementName property.

OperatingStatus

Data type: uint16

Access type: Read-only

Provides current status information for the operational condition of the element and can be used for providing more detail with respect to the value of the EnabledState property. A Null value indicates that this property is not implemented. This property is inherited from CIM_ManagedSystemElement.

Unknown (0)

Not Available (1)

Servicing (2)

Starting (3)

Stopping (4)

Stopped (5)

Aborted (6)

Dormant (7)

Completed (8)

Migrating (9)

Emigrating (10)

Immigrating (11)

Snapshotting (12)

Shutting Down (13)

In Test (14)

Transitioning (15)

In Service (16)

DMTF Reserved (..)

Vendor Reserved (0x8000.. )

OperationalStatus

Data type: uint16 array

Access type: Read-only

The current statuses of the object. This property is inherited from CIM_ManagedSystemElement.

OtherCurrentScanMode

Data type: string

Access type: Read-only

The current scan mode when the instance's CurrentScanMode property is 1 (Other). This property is inherited from CIM_VideoHead and it is set to Null.

OtherEnabledState

Data type: string

Access type: Read-only

A string that describes the enabled or disabled state of the element when the EnabledState property is set to 1 (Other). This property must be set to Null when EnabledState is any value other than 1. This property is inherited from CIM_EnabledLogicalElement, and it is always set to Null.

OtherIdentifyingInfo

Data type: string array

Access type: Read-only

Any additional data, beyond device ID information, that could be used to identify a logical device. This property is inherited from CIM_LogicalDevice, and it is set to Null.

PowerManagementCapabilities

Data type: uint16 array

Access type: Read-only

The power management capabilities of the device. This property is inherited from CIM_LogicalDevice, but it is not used.

PowerManagementSupported

Data type: boolean

Access type: Read-only

Indicates whether the device can be power managed. This property is inherited from CIM_LogicalDevice, but it is not used.

PowerOnHours

Data type: uint64

Access type: Read-only

The number of consecutive hours that this device has been powered on since its last power cycle. This property is inherited from CIM_LogicalDevice, but it is not used.

PrimaryStatus

Data type: uint16

Access type: Read-only

Provides high level status information. This property should be used in conjunction with the DetailedStatus property to provide high level and detailed health status of the element and its subcomponents. A Null value indicates that this property is not implemented. This property is inherited from CIM_ManagedSystemElement.

Unknown (0)

OK (1)

Degraded (2)

Error (3)

DMTF Reserved (..)

Vendor Reserved (0x8000.. )

RequestedState

Data type: uint16

Access type: Read-only

The last requested or desired state for the element. The actual state of the element is represented by EnabledState. This property is inherited from CIM_EnabledLogicalElement.

Value	Meaning
12	Not Applicable

Status

Data type: string

Access type: Read-only

A string that specifies the current status of the object. This property is inherited from CIM_ManagedSystemElement, but it is not used.

StatusDescriptions

Data type: string array

Access type: Read-only

Strings that describe the various OperationalStatus array values. This property is inherited from CIM_ManagedSystemElement.

StatusInfo

Data type: uint16

Access type: Read-only

The current state of the logical device. This property is inherited from CIM_LogicalDevice, but it is not used.

SystemCreationClassName

Data type: string

Access type: Read-only

The scoping system's creation class name. This property is inherited from CIM_LogicalDevice.

SystemName

Data type: string

Access type: Read-only

The unique identifier for the scoping virtual machine. This property is inherited from CIM_LogicalDevice.

TimeOfLastStateChange

Data type: datetime

Access type: Read-only

The date or time when the enabled state of the element last changed. This property is inherited from CIM_EnabledLogicalElement, and it is always set to Null.

TotalPowerOnHours

Data type: uint64

Access type: Read-only

The total number of hours that this device has been powered. This property is inherited from CIM_LogicalDevice, but it is not used.

TransitioningToState

Data type: uint16

Access type: Read-only

Indicates the target state to which the instance is transitioning. This property is inherited from CIM_EnabledLogicalElement.

Value	Meaning
12	Not Applicable

Remarks

Access to the Msvm_VideoHead class might be restricted by UAC Filtering. For more information, see User Account Control and WMI.

Requirements

Requirement	Value
Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	Windows Server 2012 [desktop apps only]
Namespace	Root\Virtualization\V2
MOF	WindowsVirtualization.V2.mof
DLL	Vmms.exe

See also

CIM_VideoHead

CIM_VideoHead

Video Classes