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PutInstanceWmi function

  • Artikkeli

Creates or updates an instance of an existing class. The instance is written to the WMI repository.

Note

This API is for internal use only. It's not intended for use from developer code.

Syntax

HRESULT PutInstanceWmi (
   [in] IWbemClassObject*    pInst,
   [in] long                 lFlags,
   [in] IWbemContext*        pCtx,
   [out] IWbemCallResult**   ppCallResult
);

Parameters

pInst
[in] A pointer to the instance to be written.

lFlags
[in] A combination of flags that affect the behavior of this function. The following values are defined in the WbemCli.h header file, or you can define them as constants in your code:

Constant Value Description
WBEM_FLAG_USE_AMENDED_QUALIFIERS 0x20000 If set, WMI does not store any qualifiers with the Amended flavor.
If not set, it is assumed that this object is not localized, and all qualifiers are stored with this instance.
WBEM_FLAG_CREATE_OR_UPDATE 0 Create the instance if it does not exist, or overwrite it if it exists already.
WBEM_FLAG_UPDATE_ONLY 1 Update the instance. The instance must exist for the call to be successful.
WBEM_FLAG_CREATE_ONLY 2 Create the instance. The call fails if the instance already exists.
WBEM_FLAG_RETURN_IMMEDIATELY 0x10 The flag causes a semisynchronous call.

pCtx
[in] Typically, this value is null. Otherwise, it is a pointer to an IWbemContext instance that can be used by the provider that is providing the requested classes.

ppCallResult
[out] If null, this parameter is unused. If lFlags contains WBEM_FLAG_RETURN_IMMEDIATELY, the function returns immediately with WBEM_S_NO_ERROR. The ppCallResult parameter receives a pointer to a new IWbemCallResult object.

Return value

The following values returned by this function are defined in the WbemCli.h header file, or you can define them as constants in your code:

Constant Value Description
WBEM_E_ACCESS_DENIED 0x80041003 The user does not have permission to update an instance of the specified class.
WBEM_E_FAILED 0x80041001 An unspecified error has occurred.
WBEM_E_INVALID_CLASS 0x80041010 The class supporting this instance is not valid.
WBEM_E_ILLEGAL_NULL 0x80041028 a null was specified for a property that cannot be null, such as one that is marked by an Indexed or Not_Null qualifier.
WBEM_E_INVALID_OBJECT 0x8004100f The specified instance is not valid. (For example, calling PutInstanceWmi with a class returns this value.)
WBEM_E_INVALID_PARAMETER 0x80041008 A parameter is not valid.
WBEM_E_ALREADY_EXISTS 0x80041019 The WBEM_FLAG_CREATE_ONLY flag was specified, but the instance already exists.
WBEM_E_NOT_FOUND 0x80041002 WBEM_FLAG_UPDATE_ONLY was specified in lFlags, but the instance does not exist.
WBEM_E_OUT_OF_MEMORY 0x80041006 Not enough memory is available to complete the operation.
WBEM_E_SHUTTING_DOWN 0x80041033 WMI was probably stopped and restarting. Call ConnectServerWmi again.
WBEM_E_TRANSPORT_FAILURE 0x80041015 The remote procedure call (RPC) link between the current process and WMI has failed.
WBEM_S_NO_ERROR 0 The function call was successful.

Remarks

This function wraps a call to the IWbemServices::PutInstance method.

The PutInstanceWmi function supports creating instances and updating instances of existing classes only. Depending on how the pCtx parameter is set, either some or all of the properties of the instance are updated.

When the instance pointed to by pInst belongs to a subclass, Windows Management calls all the providers responsible for the classes from which the subclass derives. All of these providers must succeed for the original PutInstanceWmi request to succeed. The provider supporting the topmost class in the hierarchy is called first. The calling order continues with the subclass of the topmost class and proceeds from top to bottom until Windows Management reaches the provider for the class owning the instance pointed to by pInst. Windows Management does not call the providers for any of the child classes of an instance.

When an application must update an instance that belongs to a class hierarchy, the pInst parameter must point to the instance containing the properties to be modified. That is, consider a target instance that belongs to ClassB. The ClassB instance derives from ClassA, and ClassA defines the property PropA. If an application wants to make a change to the value of PropA in the ClassB instance, it must set pInst to that instance rather than an instance of ClassA.

Calling PutInstanceWmi on an instance of an abstract class is not allowed.

If the function call fails, you can obtain additional error information by calling the GetErrorInfo function.

Requirements

Platforms: See System Requirements.

Header: WMINet_Utils.idl

.NET Framework Versions: Available since 4.7.2

See also