Msvm_Keyboard class
Represents a keyboard device. Keyboards are logical devices that are always present in a virtual system, and thus are not allocated through a resource pool. One instance is always present in a virtual computer system.
The following syntax is simplified Managed Object Format (MOF) code, and it includes all of the inherited properties.
Syntax
class Msvm_Keyboard : CIM_UserDevice
{
string Caption = "Keyboard";
string Description = "Microsoft Virtual Keyboard";
string ElementName = "Keyboard";
datetime InstallDate;
string Name = "Keyboard";
uint16 OperationalStatus[] = { 2 };
string StatusDescriptions[] = { "OK" };
string Status;
uint16 HealthState = 5;
uint16 EnabledState = 5;
string OtherEnabledState;
uint16 RequestedState = 12;
uint16 EnabledDefault = 2;
datetime TimeOfLastStateChange;
string SystemCreationClassName = "Msvm_ComputerSystem";
string SystemName = "GUID";
string CreationClassName = "Msvm_Keyboard";
string DeviceID = "Microsoft:GUID";
boolean PowerManagementSupported;
uint16 PowerManagementCapabilities[];
uint16 Availability;
uint16 StatusInfo;
uint32 LastErrorCode;
string ErrorDescription;
boolean ErrorCleared;
string OtherIdentifyingInfo[];
uint64 PowerOnHours;
uint64 TotalPowerOnHours;
string IdentifyingDescriptions[];
uint16 AdditionalAvailability[] = { 6 };
uint64 MaxQuiesceTime;
uint16 LocationIndicator = 4;
boolean IsLocked = False;
string Layout = "00000409";
uint16 NumberOfFunctionKeys = 12;
uint16 Password = 5;
};
Members
The Msvm_Keyboard class has these types of members:
- Methods
- Properties
Methods
The Msvm_Keyboard class has these methods.
| Method | Description |
|---|---|
| EnableDevice | This method is not supported. |
| IsKeyPressed | Determines whether the specified key is pressed. |
| OnlineDevice | This method is not supported. |
| PressKey | Sets the state of the specified key to "pressed". |
| QuiesceDevice | This method is not supported. |
| ReleaseKey | Clears the "pressed" state of the specified key. |
| RequestStateChange | This method is not supported. |
| Reset | This method is not supported. |
| RestoreProperties | This method is not supported. |
| SaveProperties | This method is not supported. |
| SetPowerState | This method is not supported. |
| TypeCtrlAltDel | Sends the CTRL+ALT+DEL key sequence. |
| TypeKey | Types the specified key. This is equivalent to calling PressKey followed by ReleaseKey. |
| TypeScancodes | Simulates a key sequence using scan codes. Windows Server 2008: The TypeScancodes method is not supported until Windows Server 2008 R2. |
| TypeText | Types the specified text string. This is equivalent to calling PressKey followed by ReleaseKey for each character in the string. |
Properties
The Msvm_Keyboard class has these properties.
AdditionalAvailability
Data type: uint16 array
Access type: Read-only
Any additional availability and status of the device, beyond that specified in the Availability property. The Availability property denotes the primary status and availability of the device. This property is inherited from CIM_LogicalDevice and it is always set to 6 (Not Applicable).
Availability
Data type: uint16
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
Caption
Data type: string
Access type: Read-only
Qualifiers: MaxLen (64)
A short textual description (one-line string) of the object. This property is inherited from CIM_ManagedElement and it is always set to "Keyboard".
CreationClassName
Data type: string
Access type: Read-only
Qualifiers: MaxLen (256)
The 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. This property is inherited from CIM_LogicalDevice and it is always set to "Msvm_Keyboard".
Description
Data type: string
Access type: Read-only
A textual description of the object. This property is inherited from CIM_ManagedElement and it is always set to "Microsoft Virtual Keyboard".
DeviceID
Data type: string
Access type: Read-only
An address or other identifying information to uniquely name the logical device. This property is inherited from CIM_LogicalDevice and it is always set to "Microsoft:GUID".
ElementName
Data type: string
Access type: Read-only
A user-friendly name for the object. This property allows each instance to define a user-friendly name in addition to its key properties, identity data, and description information. Note that the Name property of the CIM_ManagedSystemElement class is also defined as a user-friendly name. But, it is often subclassed to be a Key. It is not reasonable that the same property can convey both identity and a user-friendly name, without inconsistencies. Where Name exists and is not a Key (such as for instances of CIM_LogicalDevice), the same information can be present in both the Name and ElementName properties. This property is inherited from CIM_ManagedElement and it is always set to "Keyboard".
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).
EnabledState
Data type: uint16
Access type: Read-only
The enabled and disabled states of an element. This property is inherited from CIM_EnabledLogicalElement and it is always set to 5 (Not Applicable).
ErrorCleared
Data type: boolean
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
ErrorDescription
Data type: string
Access type: Read-only
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 property is inherited from CIM_ManagedSystemElement and it is always set to 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 array. This property is inherited from CIM_LogicalDevice and it is always set to NULL.
InstallDate
Data type: datetime
Access type: Read-only
The date and time when the virtual system was created. This property is inherited from CIM_ManagedSystemElement.
IsLocked
Data type: boolean
Access type: Read-only
Indicates whether the device is locked, preventing user input or output. This property is inherited from CIM_UserDevice and it is set to False.
LastErrorCode
Data type: uint32
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
Layout
Data type: string
Access type: Read-only
A free-form string indicating the format and layout of the keyboard. This property is set to "00000409".
LocationIndicator
Data type: uint16
Access type: Read-only
The state of an indicator that is part of a device. This property is inherited from CIM_LogicalDevice and it is always set to 4 (Not Supported).
MaxQuiesceTime
Data type: uint64
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
Name
Data type: string
Access type: Read-only
Qualifiers: MaxLen (1024)
The 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 and it is always set to "Keyboard".
NumberOfFunctionKeys
Data type: uint16
Access type: Read-only
The number of function keys on the keyboard. This property is set to 12.
OperationalStatus
Data type: uint16 array
Access type: Read-only
The current status of the element. This property is inherited from CIM_ManagedSystemElement and it is always set to 2 (OK).
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 always set to NULL.
Password
Data type: uint16
Access type: Read-only
Indicates whether a hardware-level password is enabled at the keyboard, preventing local input. This property is set to 5 (Not Implemented).
PowerManagementCapabilities
Data type: uint16 array
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
PowerManagementSupported
Data type: boolean
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
PowerOnHours
Data type: uint64
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
RequestedState
Data type: uint16
Access type: Read-only
The last requested or desired state for the element. This property is inherited from CIM_EnabledLogicalElement and it is always set to 12.
Status
Data type: string
Access type: Read-only
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 and it is always set to "OK".
StatusInfo
Data type: uint16
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
SystemCreationClassName
Data type: string
Access type: Read-only
Qualifiers: MaxLen (256)
The scoping system's creation class name. This property is inherited from CIM_LogicalDevice and it is set to "Msvm_ComputerSystem".
SystemName
Data type: string
Access type: Read-only
Qualifiers: MaxLen (256)
The scoping system's name. This value corresponds to the value of the Name property of the Msvm_ComputerSystem class for the scoping virtual system. This property is inherited from CIM_LogicalDevice and it is always set to "GUID".
TimeOfLastStateChange
Data type: datetime
Access type: Read-only
The date and time when the enabled state of the element last changed. If the state of the element has not changed and this property is populated, then it must be set to a 0 interval value. If a state change was requested, but rejected or not yet processed, the property must not be updated. This property is inherited from CIM_EnabledLogicalElement and it is always set to NULL.
TotalPowerOnHours
Data type: uint64
Access type: Read-only
This property is inherited from CIM_LogicalDevice but it is not used.
Remarks
Access to the Msvm_Keyboard class might be restricted by UAC Filtering. For more information, see User Account Control and WMI.
Requirements
Minimum supported client |
None supported |
Minimum supported server |
Windows Server 2008 |
End of client support |
None supported |
End of server support |
Windows Server 2012 |
Namespace |
Root\Virtualization |
MOF |
WindowsVirtualization.mof |