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WMI Libraly > Win32_VideoController Class

Win32_VideoController Class

The Win32_VideoController class represents the capabilities and management capacity of the video controller on a Win32 computer system.
Examples: Video adapter manufacturer, chipset version, display resolution, and number of colors.
Namespace value is root/CIMV2.
WMI Provider value is CIMWin32.


Properties

  • AcceleratorCapabilities
  • An array of integers indicating the graphics and 3D capabilities of the video controller.

  • AdapterCompatibility
  • The AdapterCompatibility properties contains the general chip set used for this controller in order to compare compatibilities with the system

  • AdapterDACType
  • The AdapterDACType property contains a string of the Digital-to-Analog converter (DAC) chip name or ID.
    Character Set: Alphanumeric

  • AdapterRAM
  • The AdapterRAM property indicates the memory size of the video adapter.
    Example: 64000

  • Availability
  • The availability and status of the device. For example, the Availability property indicates that the device is running and has full power (value=3), or is in a warning (4), test (5), degraded (10) or power save state (values 13-15 and 17). Regarding the power saving states, these are defined as follows: Value 13 ("Power Save - Unknown") indicates that the device is known to be in a power save mode, but its exact status in this mode is unknown; 14 ("Power Save - Low Power Mode") indicates that the device is in a power save state but still functioning, and may exhibit degraded performance; 15 ("Power Save - Standby") describes that the device is not functioning but could be brought to full power 'quickly'; and value 17 ("Power Save - Warning") indicates that the device is in a warning state, though also in a power save mode.

  • CapabilityDescriptions
  • An array of free-form strings providing more detailed explanations for any of the video accelerator features indicated in the Capabilities array. Note, each entry of this array is related to the entry in the Capabilities array that is located at the same index.

  • Caption
  • The Caption property is a short textual description (one-line string) of the object.

  • ColorTableEntries
  • The ColorTableEntries property indicates the size of the system's color table, if the device has a color depth of no more than 8 bits per pixel, null otherwise.

    Example: 256

  • ConfigManagerErrorCode
  • Indicates the Win32 Configuration Manager error code. The following values may be returned:
    0 This device is working properly.
    1 This device is not configured correctly.
    2 Windows cannot load the driver for this device.
    3 The driver for this device might be corrupted, or your system may be running low on memory or other resources.
    4 This device is not working properly. One of its drivers or your registry might be corrupted.
    5 The driver for this device needs a resource that Windows cannot manage.
    6 The boot configuration for this device conflicts with other devices.
    7 Cannot filter.
    8 The driver loader for the device is missing.
    9 This device is not working properly because the controlling firmware is reporting the resources for the device incorrectly.
    10 This device cannot start.
    11 This device failed.
    12 This device cannot find enough free resources that it can use.
    13 Windows cannot verify this device's resources.
    14 This device cannot work properly until you restart your computer.
    15 This device is not working properly because there is probably a re-enumeration problem.
    16 Windows cannot identify all the resources this device uses.
    17 This device is asking for an unknown resource type.
    18 Reinstall the drivers for this device.
    19 Your registry might be corrupted.
    20 Failure using the VxD loader.
    21 System failure: Try changing the driver for this device. If that does not work, see your hardware documentation. Windows is removing this device.
    22 This device is disabled.
    23 System failure: Try changing the driver for this device. If that doesn't work, see your hardware documentation.
    24 This device is not present, is not working properly, or does not have all its drivers installed.
    25 Windows is still setting up this device.
    26 Windows is still setting up this device.
    27 This device does not have valid log configuration.
    28 The drivers for this device are not installed.
    29 This device is disabled because the firmware of the device did not give it the required resources.
    30 This device is using an Interrupt Request (IRQ) resource that another device is using.
    31 This device is not working properly because Windows cannot load the drivers required for this device.

  • ConfigManagerUserConfig
  • Indicates whether the device is using a user-defined configuration.

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

  • CurrentBitsPerPixel
  • The number of bits used to display each pixel.

  • CurrentHorizontalResolution
  • Current number of horizontal pixels.

  • CurrentNumberOfColors
  • Number of colors supported at the current resolutions.

  • CurrentNumberOfColumns
  • If in character mode, number of columns for this video controller. Otherwise, enter 0.

  • CurrentNumberOfRows
  • If in character mode, number of rows for this video controller. Otherwise, enter 0.

  • CurrentRefreshRate
  • The CurrentRefreshRate property specifies the frequency at which the video controller refreshes the image for the monitor. A value of 0 indicates the default rate is being used, while 0xFFFFFFFF indicates the optimal rate is being used.

  • CurrentScanMode
  • Current scan mode. "Interlaced" (value=3) or "Non Interlaced" (4) can be defined using this property.

  • CurrentVerticalResolution
  • Current number of vertical pixels.

  • Description
  • The Description property provides a textual description of the object.

  • DeviceID
  • The DeviceID property contains a identifier (unique to the computer system) for this video controller.

  • DeviceSpecificPens
  • The DeviceSpecificPens property indicates the current number of device-specific pens. 0xffff means the device does not support pens.
    Example: 3

  • DitherType
  • The DitherType property indicates the dither type of the video controller. The property can be one of the following predefined values, or a driver-defined value greater than or equal to 256: Value Meaning :-1 - No dithering. 2 - Dithering with a coarse brush. 3 - Dithering with a fine brush. 4 - Line art dithering; a special dithering method that produces well defined borders between black, white, and gray scalings. It is not suitable for images that include continuous graduations in intensity and hue such as scanned photographs. 5 - Device does grayscaling.

  • DriverDate
  • The DriverDate property indicates the last modification date and time of the currently-installed video driver.

  • DriverVersion
  • The DriverVersion property indicates the version number of the video driver.

  • ErrorCleared
  • ErrorCleared is a boolean property indicating that the error reported in LastErrorCode property is now cleared.

  • ErrorDescription
  • ErrorDescription is a free-form string supplying more information about the error recorded in LastErrorCode property, and information on any corrective actions that may be taken.

  • ICMIntent
  • The ICMIntent ( Image Color Matching Intent ) property indicates the specific value of one of the three possible color matching methods, (or intents) that should be used by default. This property is primarily for non-ICM applications. ICM applications establish intents by using the ICM functions. This property can be one of the following predefined values, or a driver defined value greater than or equal to 256.Value Meaning :-1 - Color matching should optimize for color saturation. This value is the most appropriate choice for business graphs when dithering is not desired. 2 - Color matching should optimize for color contrast. This value is the most appropriate choice for scanned or photographic images when dithering is desired. 3 - Color matching should optimize to match the exact color requested. This value is most appropriate for use with business logos or other images when an exact color match is required.

  • ICMMethod
  • The ICMMethod ( Image Color Matching Method ) property specifies how ICM is handled. For a non-ICM application, this property shows howICM is enabled. For ICM applications, the system examines this member to determine how to handle ICM support. This property can be one of the following predefined values, or a driver-defined value greater than or equal to 256.Value Meaning :-1 - Specifies that ICM is disabled. 2 - Specifies that ICM is handled by Windows. 3 - Specifies that ICM is handled by the device driver. 4 - Specifies that ICM is handled by the destination device.

  • InfFilename
  • The InfFilename property indicates the path to the video adapter's .INF file.
    Example: C:\WINNT\SYSTEM32\DRIVERS

  • InfSection
  • The InfSection property indicates the section of the .INF file where the Win32 video information resides.

  • InstallDate
  • The InstallDate property is datetime value indicating when the object was installed. A lack of a value does not indicate that the object is not installed.

  • InstalledDisplayDrivers
  • The InstalledDisplayDrivers property indicates the name of the installed display device driver.

  • LastErrorCode
  • LastErrorCode captures the last error code reported by the logical device.

  • MaxMemorySupported
  • Maximum amount of memory supported in bytes.

  • MaxNumberControlled
  • Maximum number of directly addressable entities supported by this Controller. A value of 0 should be used if the number is unknown or unlimited.

  • MaxRefreshRate
  • Maximum refresh rate of the video controller in hertz.

  • MinRefreshRate
  • Minimum refresh rate of the video controller in hertz.

  • Monochrome
  • The Monochrome property indicates whether gray scale or color is used to display images.

  • Name
  • The Name property defines the label by which the object is known. When subclassed, the Name property can be overridden to be a Key property.

  • NumberOfColorPlanes
  • Current number of color planes. If this value is not applicable for the current video configuration, enter 0.

  • NumberOfVideoPages
  • Number of video pages supported given the current resolutions and available memory.

  • PNPDeviceID
  • Indicates the Win32 Plug and Play device ID of the logical device. Example: *PNP030b

  • PowerManagementCapabilities
  • Indicates the specific power-related capabilities of the logical device. The array values, 0="Unknown", 1="Not Supported" and 2="Disabled" are self-explanatory. The value, 3="Enabled" indicates that the power management features are currently enabled but the exact feature set is unknown or the information is unavailable. "Power Saving Modes Entered Automatically" (4) describes that a device can change its power state based on usage or other criteria. "Power State Settable" (5) indicates that the SetPowerState method is supported. "Power Cycling Supported" (6) indicates that the SetPowerState method can be invoked with the PowerState input variable set to 5 ("Power Cycle"). "Timed Power On Supported" (7) indicates that the SetPowerState method can be invoked with the PowerState input variable set to 5 ("Power Cycle") and the Time parameter set to a specific date and time, or interval, for power-on.

  • PowerManagementSupported
  • Boolean indicating that the Device can be power managed - ie, put into a power save state. This boolean does not indicate that power management features are currently enabled, or if enabled, what features are supported. Refer to the PowerManagementCapabilities array for this information. If this boolean is false, the integer value 1, for the string, "Not Supported", should be the only entry in the PowerManagementCapabilities array.

  • ProtocolSupported
  • The protocol used by the controller to access 'controlled' devices.

  • ReservedSystemPaletteEntries
  • The ReservedSystemPaletteEntries property indicates the current number of reserved entries in a system's color table. The operating system may reserve entries to support standard colors for task bars and other desktop display items. If the system is not using a palette, then ReservedSystemPaletteEntries is null.

    Example: 24.

  • SpecificationVersion
  • The SpecificationVersion property indicates the version number of the initialization data specification (upon which the structure is based).

  • Status
  • The Status property is a string indicating the current status of the object. Various operational and non-operational statuses can be defined. Operational statuses are "OK", "Degraded" and "Pred Fail". "Pred Fail" indicates that an element may be functioning properly but predicting a failure in the near future. An example is a SMART-enabled hard drive. Non-operational statuses can also be specified. These are "Error", "Starting", "Stopping" and "Service". The latter, "Service", could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is on-line, yet the managed element is neither "OK" nor in one of the other states.

  • StatusInfo
  • StatusInfo is a string indicating whether the logical device is in an enabled (value = 3), disabled (value = 4) or some other (1) or unknown (2) state. If this property does not apply to the logical device, the value, 5 ("Not Applicable"), should be used.

  • SystemCreationClassName
  • The scoping System's CreationClassName.

  • SystemName
  • The scoping System's Name.

  • SystemPaletteEntries
  • The SystemPaletteEntries property indicates the current number of entries in a system's color table. If the system is not using a palette then SystemPaletteEntries is null.

    Example: 256

  • TimeOfLastReset
  • The TimeOfLastReset property indicates the date and time this controller was last reset. This could mean the controller was powered down, or reinitialized.

  • VideoArchitecture
  • The video architecture. For example, VGA (value=5) or PC-98 (160) may be specified.

  • VideoMemoryType
  • An integer enumeration indicating the type of video memory.

  • VideoMode
  • Current video mode.

  • VideoModeDescription
  • The VideoModeDescription property indicates the current resolution, color, and scan mode settings of the video controller.
    Example: 1024 x 768 x 256 colors.

  • VideoProcessor
  • A free-form string describing the video processor/Controller.


    Methods

  • SetPowerState
  • SetPowerState defines the desired power state for a logical device and when a device should be put into that state. The desired power state is specified by setting the PowerState parameter to one of the following integer values: 1="Full Power", 2="Power Save - Low Power Mode", 3="Power Save - Standby", 4="Power Save - Other", 5="Power Cycle" or 6="Power Off". The Time parameter (for all state changes, except 5, "Power Cycle") indicates when the power state should be set, either as a regular date-time value or as an interval value (where the interval begins when the method invocation is received). When the PowerState parameter is equal to 5, "Power Cycle", the Time parameter indicates when the device should power on again. Power off is immediate. SetPowerState should return 0 if successful, 1 if the specified PowerState and Time request is not supported, and some other value if any other error occurred. In a subclass, the set of possible return codes could be specified, using a ValueMap qualifier on the method. The strings to which the ValueMap contents are 'translated' may also be specified in the subclass as a Values array qualifier.

  • Reset
  • Requests a reset of the logical device. The return value should be 0 if the request was successfully executed, 1 if the request is not supported and some other value if an error occurred.


    Example WQL

    SELECT * FROM Win32_VideoController
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