IWbemServices::DeleteClassAsync method (wbemcli.h)
The IWbemServices::DeleteClassAsync method deletes the specified class from the current namespace. This method is identical to IWbemServices::DeleteClass except that the call returns immediately. Confirmation or failure is asynchronously reported to the specified object sink using the IWbemObjectSink::SetStatus method after the operation is complete.
Syntax
HRESULT DeleteClassAsync(
[in] const BSTR strClass,
[in] long lFlags,
[in] IWbemContext *pCtx,
[in] IWbemObjectSink *pResponseHandler
);
Parameters
[in] strClass
Name of the class targeted for deletion.
[in] lFlags
One or more of the following values are valid.
WBEM_FLAG_SEND_STATUS
This flag registers with Windows Management a request to receive intermediate status reports through the client's implementation of IWbemObjectSink::SetStatus. Provider implementation must support intermediate status reporting, for this flag to change behavior.
WBEM_FLAG_OWNER_UPDATE
Push providers must specify this flag when calling DeleteClassAsync to indicate that this class has changed.
[in] pCtx
Typically NULL. Otherwise, this is a pointer to an IWbemContext object that may be used by the provider deleting the class. The values in the context object must be specified in the documentation for the provider in question. For more information about this parameter, see Making Calls to WMI.
[in] pResponseHandler
Pointer to an implementation of IWbemObjectSink implemented by the caller. This handler receives the status of the deletion request when it becomes available through the IWbemObjectSink::SetStatus method. If any error code is returned, then the supplied IWbemObjectSink pointer is not used. If WBEM_S_NO_ERROR is returned, then the user's IWbemObjectSink implementation is called to indicate the result of the operation. Windows Management only calls AddRef on the pointer in cases where WBEM_S_NO_ERROR returns. In cases where an error code returns, the reference count is the same as on entry. For a detailed explanation of this parameter, see Calling a Method.
Return value
This method returns an HRESULT indicating the status of the method call. The following list lists the value contained within an HRESULT.
All other return codes are provided to the object sink specified by the pReponseHandler parameter through the SetStatus method. Error conditions, such as when the class does not exist or the user does not have permission to delete classes, are reported to the handler. They are not reported in the return code of this method.
COM-specific error codes also may be returned if network problems cause you to lose the remote connection to Windows Management.
Remarks
If a dynamic instance provider is associated with the class, the provider is unregistered, and is no longer called for that class. Any classes that derive from the deleted class are also deleted, and their associated providers become unregistered. All outstanding static instances of the specified class and its subclasses are also deleted when the class is deleted.
If the class is provided by a dynamic class provider, the success of the deletion depends on whether class deletion is supported by that provider.
For more information about using methods semisynchronously, see IWbemServices::DeleteClass and Calling a Method.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista |
| Minimum supported server | Windows Server 2008 |
| Target Platform | Windows |
| Header | wbemcli.h (include Wbemidl.h) |
| Library | Wbemuuid.lib |
| DLL | Fastprox.dll; Esscli.dll; FrameDyn.dll; FrameDynOS.dll; Ntevt.dll; Stdprov.dll; Viewprov.dll; Wbemcomn.dll; Wbemcore.dll; Wbemess.dll; Wbemsvc.dll; Wmipicmp.dll; Wmidcprv.dll; Wmipjobj.dll; Wmiprvsd.dll |