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CIM_VideoHead class

Represents one head of the CIM_DisplayController.

Important  The DMTF (Distributed Management Task Force) CIM (Common Information Model) classes are the parent classes upon which WMI classes are built. WMI currently supports only the CIM 2.x version schemas.

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

Syntax

class CIM_VideoHead : CIM_LogicalDevice
{
  string   SystemName;
  string   SystemCreationClassName;
  uint16   StatusInfo;
  string   Status;
  boolean  PowerManagementSupported;
  uint16   PowerManagementCapabilities[];
  string   PNPDeviceID;
  string   Name;
  uint32   LastErrorCode;
  datetime InstallDate;
  string   ErrorDescription;
  boolean  ErrorCleared;
  string   DeviceID;
  string   Description;
  string   CreationClassName;
  boolean  ConfigManagerUserConfig;
  uint32   ConfigManagerErrorCode;
  string   Caption;
  uint16   Availability;
  uint32   CurrentBitsPerPixel;
  uint32   CurrentHorizontalResolution;
  uint32   CurrentVerticalResolution;
  uint32   MaxRefreshRate;
  uint32   MinRefreshRate;
  uint32   CurrentRefreshRate;
  uint16   CurrentScanMode;
  string   OtherCurrentScanMode;
  uint32   CurrentNumberOfRows;
  uint32   CurrentNumberOfColumns;
  uint64   CurrentNumberOfColors;
};

Members

The CIM_VideoHead class has these types of members:

  • Properties

Properties

The CIM_VideoHead class has these properties.

Availability

Data type: uint16

Access type: Read-only

Availability and status of the device. Inherited from CIM_LogicalDevice.

Value Meaning
1 (0x1)

Other

2 (0x2)

Unknown

3 (0x3)

Running/Full Power

4 (0x4)

Warning

5 (0x5)

In Test

6 (0x6)

Not Applicable

7 (0x7)

Power Off

8 (0x8)

Off Line

9 (0x9)

Off Duty

10 (0xA)

Degraded

11 (0xB)

Not Installed

12 (0xC)

Install Error

13 (0xD)

Power Save - Unknown

The device is known to be in a power save mode, but its exact status is unknown.

14 (0xE)

Power Save - Low Power Mode

The device is in a power save state, but still functioning, and may exhibit degraded performance.

15 (0xF)

Power Save - Standby

The device is not functioning, but could be brought to full power quickly.

16 (0x10)

Power Cycle

17 (0x11)

Power Save - Warning

The device is in a warning state, though also in a power save mode.

 

Caption

Data type: string

Access type: Read-only

Short textual description of the object. This property is inherited from CIM_ManagedSystemElement.

ConfigManagerErrorCode

Data type: uint32

Access type: Read-only

Win32 Configuration Manager error code.

Value Meaning
0 (0x0)

Device is working properly.

1 (0x1)

Device is not configured correctly.

2 (0x2)

Windows cannot load the driver for this device.

3 (0x3)

Driver for this device might be corrupted, or the system may be low on memory or other resources.

4 (0x4)

Device is not working properly. One of its drivers or the registry might be corrupted.

5 (0x5)

Driver for the device requires a resource that Windows cannot manage.

6 (0x6)

Boot configuration for the device conflicts with other devices.

7 (0x7)

Cannot filter.

8 (0x8)

Driver loader for the device is missing.

9 (0x9)

Device is not working properly; the controlling firmware is incorrectly reporting the resources for the device.

10 (0xA)

Device cannot start.

11 (0xB)

Device failed.

12 (0xC)

Device cannot find enough free resources to use.

13 (0xD)

Windows cannot verify the device's resources.

14 (0xE)

Device cannot work properly until the computer is restarted.

15 (0xF)

Device is not working properly due to a possible re-enumeration problem.

16 (0x10)

Windows cannot identify all of the resources that the device uses.

17 (0x11)

Device is requesting an unknown resource type.

18 (0x12)

Device drivers must be reinstalled.

19 (0x13)

Failure using the VxD loader.

20 (0x14)

Registry might be corrupted.

21 (0x15)

System failure. If changing the device driver is ineffective, see the hardware documentation. Windows is removing the device.

22 (0x16)

Device is disabled.

23 (0x17)

System failure. If changing the device driver is ineffective, see the hardware documentation.

24 (0x18)

Device is not present, not working properly, or does not have all of its drivers installed.

25 (0x19)

Windows is still setting up the device.

26 (0x1A)

Windows is still setting up the device.

27 (0x1B)

Device does not have valid log configuration.

28 (0x1C)

Device drivers are not installed.

29 (0x1D)

Device is disabled; the device firmware did not provide the required resources.

30 (0x1E)

Device is using an IRQ resource that another device is using.

31 (0x1F)

Device is not working properly; Windows cannot load the required device drivers.

 

ConfigManagerUserConfig

Data type: boolean

Access type: Read-only

If TRUE, the device is using a user-defined configuration.

CreationClassName

Data type: string

Access type: Read-only

Name of the class or subclass used in the creation of an instance. When used with other key properties of the class, this property allows all instances of the class and its subclasses to be uniquely identified.

CurrentBitsPerPixel

Data type: uint32

Access type: Read-only

Qualifiers: Units ( "Bits" )

The number of bits used to display each pixel.

CurrentHorizontalResolution

Data type: uint32

Access type: Read-only

Qualifiers: Units ( "Pixels" )

Current number of horizontal pixels.

CurrentNumberOfColors

Data type: uint64

Access type: Read-only

Number of colors supported at the current resolutions.

CurrentNumberOfColumns

Data type: uint32

Access type: Read-only

If in character mode, number of columns for this DisplayController. Otherwise, enter zero.

CurrentNumberOfRows

Data type: uint32

Access type: Read-only

If in character mode, number of rows for this Video Controller. Otherwise, enter zero.

CurrentRefreshRate

Data type: uint32

Access type: Read-only

Qualifiers: Units ( "Hertz" )

Current refresh rate in Hertz.

CurrentScanMode

Data type: uint16

Access type: Read-only

Current scan mode.

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" )

Current number of vertical pixels.

Description

Data type: string

Access type: Read-only

Textual description of the object. This property is inherited from CIM_ManagedSystemElement.

DeviceID

Data type: string

Access type: Read-only

Address or other identifying information to uniquely name the logical device.

ErrorCleared

Data type: boolean

Access type: Read-only

If TRUE, the error reported in the LastErrorCode property is now cleared.

ErrorDescription

Data type: string

Access type: Read-only

Free-form string that supplies information about the error recorded in the LastErrorCode property and corrective actions to perform.

InstallDate

Data type: datetime

Access type: Read-only

Date and time the object was installed. This property does not require a value to indicate that the object is installed. This property is inherited from CIM_ManagedSystemElement.

LastErrorCode

Data type: uint32

Access type: Read-only

Last error code reported by the logical device.

MaxRefreshRate

Data type: uint32

Access type: Read-only

Qualifiers: Units ( "Hertz" )

Maximum refresh rate of the DisplayController in Hertz.

MinRefreshRate

Data type: uint32

Access type: Read-only

Qualifiers: Units ( "Hertz" )

Minimum refresh rate of the Video Controller in Hertz.

Name

Data type: string

Access type: Read-only

Label by which the object is known. When subclassed, this property can be overridden to be a key property. This property is inherited from CIM_ManagedSystemElement.

OtherCurrentScanMode

Data type: string

Access type: Read-only

A string describing the current scan mode when the instance CurrentScanMode property is 1 ("Other").

PNPDeviceID

Data type: string

Access type: Read-only

Indicates the Win32 Plug and Play device identifier of the logical device.

Example: "*PNP030b"

PowerManagementCapabilities

Data type: uint16 array

Access type: Read-only

Array of the specific power-related capabilities of a logical device. This property is inherited from CIM_LogicalDevice.

Value Meaning
0 (0x0)

Unknown

1 (0x1)

Not Supported

2 (0x2)

Disabled

3 (0x3)

Enabled

The power management features are currently enabled, but the exact feature set is unknown or the information is unavailable.

4 (0x4)

Power Saving Modes Entered Automatically

The device can change its power state based on usage or other criteria.

5 (0x5)

Power State Settable

The SetPowerState method is supported. This method is found on the parent CIM_LogicalDevice class and can be implemented. For more information, see Designing Managed Object Format (MOF) Classes.

6 (0x6)

Power Cycling Supported

The SetPowerState method can be invoked with the PowerState parameter set to 5 (Power Cycle).

7 (0x7)

Timed Power On Supported

The SetPowerState method can be invoked with the PowerState parameter set to 5 (Power Cycle) and Time set to a specific date and time, or interval, for power-on.

 

PowerManagementSupported

Data type: boolean

Access type: Read-only

If TRUE, the device can be power managed, that is, put into a power-save state. If FALSE, the integer value 1 ("Not Supported") should be the only entry in the PowerManagementCapabilities array.

This property does not indicate whether power management features are currently enabled, or if enabled, which features are supported. For more information, see the PowerManagementCapabilities array.

Status

Data type: string

Access type: Read-only

Current status of the object. This property is inherited from CIM_ManagedSystemElement.

Values include the following:

"OK"

"Error"

"Degraded"

"Unknown"

"Pred Fail"

"Starting"

"Stopping"

"Service"

"Stressed"

"NonRecover"

"No Contact"

"Lost Comm"

StatusInfo

Data type: uint16

Access type: Read-only

State of the logical device. If this property does not apply to the logical device, the value 5 (Not Applicable) should be used. This property is inherited from CIM_LogicalDevice.

Value Meaning
1 (0x1)

Other

2 (0x2)

Unknown

3 (0x3)

Enabled

4 (0x4)

Disabled

5 (0x5)

Not Applicable

 

SystemCreationClassName

Data type: string

Access type: Read-only

Scoping system creation class name.

SystemName

Data type: string

Access type: Read-only

Scoping system name.

Requirements

Namespace

Root\CIMV2

See also

CIM_LogicalDevice