A class in C is a user-defined type or data structure declared with keyword class that has data and functions (also called member variables and member functions) as its members whose access is governed by the three access specifiers private, protected or public. Jun 16, 2016 Unknown type name 'namespace' #2. Closed safwanmalik opened this issue Jun 16, 2016 4 comments Closed. Tries to compile objective c as objective c. The repository card.io files are objective c (the DMZ) and I think you may be trying to compile them as objective c. Jan 06, 2014 Cannot define a class (unknown type name 'class'. Colourfulbananas (17) Hello, I've taken about a year break from c and I decided to get back into and it's fighting me:(. So I'm trying to declare a class Configure, and I just cannot seem to get it right.
The Win32_PnPEntityWMI class represents the properties of a Plug and Play device. Plug and Play entities are shown as entries in the Device Manager located in Control Panel.
The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties. Properties are listed in alphabetic order, not MOF order.
SyntaxMembers
The Win32_PnPEntity class has these types of members:
Methods
The Win32_PnPEntity class has these methods.
Properties
The Win32_PnPEntity class has these properties.
Availability
Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ('MIF.DMTF|Operational State|003.5', 'MIB.IETF|HOST-RESOURCES-MIB.hrDeviceStatus')
Availability and status of the device.
This property is inherited from CIM_LogicalDevice.
Other (1)
Unknown (2)
Running/Full Power (3)
Running or Full Power
Warning (4)
In Test (5)
Not Applicable (6)
Power Off (7)
Off Line (8)
Off Duty (9)
Degraded (10)
Not Installed (11)
Install Error (12)
Power Save - Unknown (13)
The device is known to be in a power save mode, but its exact status is unknown.
Power Save - Low Power Mode (14)
The device is in a power save state but still functioning, and may exhibit degraded performance.
Power Save - Standby (15)
The device is not functioning, but could be brought to full power quickly.
Power Cycle (16)
Power Save - Warning (17)
The device is in a warning state, though also in a power save mode.
Paused (18)
The device is paused.
Not Ready (19)
The device is not ready.
Not Configured (20)
The device is not configured.
Quiesced (21)
The device is quiet.
Caption
Data type: string
Access type: Read-only
Qualifiers: MaxLen (64), DisplayName ('Caption')
Short description of the object.
This property is inherited from CIM_ManagedSystemElement.
ClassGuid
Data type: string
Access type: Read-only
Qualifiers: MappingStrings ('WMI')
Globally unique identifier (GUID) of this Plug and Play device.
CompatibleID
Data type: string array
Access type: Read-only
A vendor-defined identification string that Setup uses to match a device to an INF file. A device can have a list of compatible IDs associated with it. The compatible IDs should be listed in order of decreasing suitability. If Setup cannot locate an INF file that matches one of a device's hardware IDs, it uses compatible IDs to locate an INF file. A compatible ID has the same format as a HardwareID. For more information, see Windows Driver Kit.
ConfigManagerErrorCode
Data type: uint32
Access type: Read-only
Qualifiers: Schema ('Win32')
Win32 Configuration Manager error code.
This property is inherited from CIM_LogicalDevice.
This device is working properly. (0)
Device is working properly.
This device is not configured correctly. (1)
Device is not configured correctly.
Windows cannot load the driver for this device. (2)
The driver for this device might be corrupted, or your system may be running low on memory or other resources. (3)
Driver for this device might be corrupted, or the system may be low on memory or other resources.
This device is not working properly. One of its drivers or your registry might be corrupted. (4)
Device is not working properly. One of its drivers or the registry might be corrupted.
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The driver for this device needs a resource that Windows cannot manage. (5)
Driver for the device requires a resource that Windows cannot manage.
The boot configuration for this device conflicts with other devices. (6)
Boot configuration for the device conflicts with other devices.
Cannot filter. (7)
The driver loader for the device is missing. (8)
Driver loader for the device is missing.
This device is not working properly because the controlling firmware is reporting the resources for the device incorrectly. (9)
Device is not working properly. The controlling firmware is incorrectly reporting the resources for the device.
This device cannot start. (10)
Device cannot start.
This device failed. (11)
Device failed.
This device cannot find enough free resources that it can use. (12)
Device cannot find enough free resources to use.
Windows cannot verify this device's resources. (13)
Windows cannot verify the device's resources.
This device cannot work properly until you restart your computer. (14)
Device cannot work properly until the computer is restarted.
This device is not working properly because there is probably a re-enumeration problem. (15)
Device is not working properly due to a possible re-enumeration problem.
Windows cannot identify all the resources this device uses. (16)
Windows cannot identify all of the resources that the device uses.
This device is asking for an unknown resource type. (17)
Device is requesting an unknown resource type.
Reinstall the drivers for this device. (18)
Device drivers must be reinstalled.
Failure using the VxD loader. (19)
Your registry might be corrupted. (20)
Registry might be corrupted.
System failure: Try changing the driver for this device. If that does not work, see your hardware documentation. Windows is removing this device. (21)
System failure. If changing the device driver is ineffective, see the hardware documentation. Windows is removing the device.
This device is disabled. (22)
Device is disabled.
System failure: Try changing the driver for this device. If that doesn't work, see your hardware documentation. (23)
System failure. If changing the device driver is ineffective, see the hardware documentation.
This device is not present, is not working properly, or does not have all its drivers installed. (24)
Device is not present, not working properly, or does not have all of its drivers installed.
Windows is still setting up this device. (25)
Windows is still setting up the device.
Windows is still setting up this device. (26)
Windows is still setting up the device.
This device does not have valid log configuration. (27)
Device does not have valid log configuration.
The drivers for this device are not installed. (28)
Device drivers are not installed.
This device is disabled because the firmware of the device did not give it the required resources. (29)
Device is disabled. The device firmware did not provide the required resources.
This device is using an Interrupt Request (IRQ) resource that another device is using. (30)
Device is using an IRQ resource that another device is using.
This device is not working properly because Windows cannot load the drivers required for this device. (31)
Device is not working properly. Windows cannot load the required device drivers.
ConfigManagerUserConfig
Data type: boolean
Access type: Read-only
Qualifiers: Schema ('Win32')
If TRUE, the device is using a user-defined configuration.
This property is inherited from CIM_LogicalDevice.
CreationClassName
Data type: string
Access type: Read-only
Qualifiers: CIM_Key
Name of the first concrete class to appear in the inheritance chain used in the creation of an instance. When used with the other key properties of the class, the property allows all instances of this class and its subclasses to be uniquely identified.
This property is inherited from CIM_LogicalDevice.
Description
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Data type: string
Access type: Read-only
Qualifiers: DisplayName ('Description')
Description of the object.
This property is inherited from CIM_ManagedSystemElement.
DeviceID
Data type: string
Access type: Read-only
Qualifiers: Key, Override ('DeviceId'), MappingStrings ('WMI')
Identifier of the Plug and Play device.
This property is inherited from CIM_LogicalDevice.
ErrorCleared
Data type: boolean
Access type: Read-only
If TRUE, the error reported in LastErrorCode is now cleared.
This property is inherited from CIM_LogicalDevice.
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ErrorDescription
Data type: string
Access type: Read-only
More information about the error recorded in LastErrorCode, and information about any corrective actions that may be taken.
This property is inherited from CIM_LogicalDevice.
HardwareID
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Data type: string array
Access type: Read-only
A vendor-defined identification string that Setup uses to match a device to an INF file. Normally, a device has an associated list of hardware IDs. An exception is the 1394 bus driver, which does not use hardware IDs. The first hardware ID in the list should be the device ID. The remaining IDs should be listed in order of decreasing suitability.
Hardware IDs appear in one the following formats:
Examples of Hardware IDs are:
For more information, see the Windows Driver Kit.
InstallDate
Data type: datetime
Access type: Read-only
Qualifiers: MappingStrings ('MIF.DMTF|ComponentID|001.5'), DisplayName ('Install Date')
Date and time the object was installed. This property does not need 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.
This property is inherited from CIM_LogicalDevice.
Manufacturer
Data type: string
Access type: Read-only
Qualifiers: MappingStrings ('WMI')
Name of the manufacturer of the Plug and Play device.
Example: 'Acme'
Name
Data type: string
Access type: Read-only
Qualifiers: DisplayName ('Name')
Label by which the object is known. When subclassed, the property can be overridden to be a key property.
This property is inherited from CIM_ManagedSystemElement. Traktor pro 3 key sync.
PNPClass
Data type: string
Access type: Read-only
Qualifiers: MappingStrings ('WMI')
Warning
This property, despite being listed in the MOF file, does not actually exist in the class. The property is described here only for the sake of completeness, and to clarify the MOF file itself.
The name of the type of this Plug and Play device.
Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008 and Windows Vista: This property is not in the MOF file.
PNPDeviceID
Data type: string
Access type: Read-only
Qualifiers: Schema ('Win32')
Windows Plug and Play device identifier of the logical device.
This property is inherited from CIM_LogicalDevice.
Example: '*PNP030b'
PowerManagementCapabilities
Data type: uint16 array
Access type: Read-only
Not implemented.
This property is inherited from CIM_LogicalDevice.
Unknown (0)
The power-related capacities are unknown.
Not Supported (1)
Power-related capacities are not supported for this device.
Disabled (2)
Power-related capacities have been disabled.
Enabled (3)
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)
The device can change its power state based on usage or other criteria.
Power State Settable (5)
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.
Power Cycling Supported (6)
The SetPowerState method can be invoked with the PowerState parameter set to 5 ('Power Cycle').
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Timed Power On Supported (7)
The SetPowerState method can be invoked with the PowerState parameter set to 5 ('Power Cycle') and the Time parameter set to a specific date and time, or interval, for power-on.
PowerManagementSupported
Data type: boolean
Access type: Read-only
Not implemented.
This property is inherited from CIM_LogicalDevice.
Present
Data type: boolean
Access type: Read-only
Qualifiers: MappingStrings ('WMI')
Whether this Plug and Play device is currently in the system.
Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008 and Windows Vista: This property is not supported.
Service
Data type: string
Access type: Read-only
Qualifiers: MappingStrings ('WMI')
Name of the service that supports this Plug and Play device. For more information, see Win32_SystemDriverPnPEntity.
Example: 'atapi'
Status
Data type: string
Access type: Read-only
Qualifiers: MaxLen (10), DisplayName ('Status')
Current status of the object. Various operational and nonoperational statuses can be defined. Operational statuses include: 'OK', 'Degraded', and 'Pred Fail' (an element, such as a SMART-enabled hard disk drive, may be functioning properly but predicting a failure in the near future). Nonoperational statuses include: '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 online, yet the managed element is neither 'OK' nor in one of the other states.
This property is inherited from CIM_ManagedSystemElement.
Values include the following:
OK ('OK')
Error ('Error')
Degraded ('Degraded')
Unknown ('Unknown')
Pred Fail ('Pred Fail')
Starting ('Starting')
Stopping ('Stopping')
Service ('Service')
Stressed ('Stressed')
NonRecover ('NonRecover')
No Contact ('No Contact')
Lost Comm ('Lost Comm')
StatusInfo
Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ('MIF.DMTF|Operational State|003.3')
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.
Other (1)
Unknown (2)
Enabled (3)
Disabled (4)
Not Applicable (5)
SystemCreationClassName
Data type: string
Access type: Read-only
Qualifiers: Propagated ('CIM_System.CreationClassName'), CIM_Key
Value of the scoping computer's CreationClassName property.
This property is inherited from CIM_LogicalDevice.
SystemName
Data type: string
Access type: Read-only
Qualifiers: Propagated ('CIM_System.Name'), CIM_Key
Name of the scoping system.
This property is inherited from CIM_LogicalDevice.
Remarks
The Win32_PnPEntity class is derived from CIM_LogicalDevice.
Examples
The Get-BrokenHardware.ps1 PowerShell sample on TechNet Gallery uses to Win32_PnPEntity to retrieve a list of non-working hardware using WMI.
The following VBScript code example connects to a group of remote computers in the same domain by creating an array of remote computer names and then displaying names of the Plug and Play devices—instances of Win32_PnPEntity—on each computer.
Requirements
See also-->
When you declare a program element such as a class, function, or variable, its name can only be 'seen' and used in certain parts of your program. The context in which a name is visible is called its scope. For example, if you declare a variable
x within a function, x is only visible within that function body. It has local scope. You may have other variables by the same name in your program; as long as they are in different scopes, they do not violate the One Definition Rule and no error is raised.
For automatic non-static variables, scope also determines when they are created and destroyed in program memory.
There are six kinds of scope:
Hiding Names
You can hide a name by declaring it in an enclosed block. In the following figure,
i is redeclared within the inner block, thereby hiding the variable associated with i in the outer block scope.
Block scope and name hiding
The output from the program shown in the figure is:
Note
The argument
szWhat is considered to be in the scope of the function. Therefore, it is treated as if it had been declared in the outermost block of the function.
Hiding class names
You can hide class names by declaring a function, object or variable, or enumerator in the same scope. However, the class name can still be accessed when prefixed by the keyword class.
Note
Any place the class name (
Account ) is called for, the keyword class must be used to differentiate it from the global-scoped variable Account. This rule does not apply when the class name occurs on the left side of the scope-resolution operator (::). Names on the left side of the scope-resolution operator are always considered class names.
The following example demonstrates how to declare a pointer to an object of type
Account using the class keyword:
The
Account in the initializer (in parentheses) in the preceding statement has global scope; it is of type double.
Note
The reuse of identifier names as shown in this example is considered poor programming style.
For information about declaration and initialization of class objects, see Classes, Structures, and Unions. For information about using the new and delete free-store operators, see new and delete operators.
Hiding names with global scope
You can hide names with global scope by explicitly declaring the same name in block scope. However, global-scope names can be accessed using the scope-resolution operator (
:: ).
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