IPrintSchemaAsyncOperation interface

Represents an asynchronous operation context for validation, merge or commit operations.


The IPrintSchemaAsyncOperation interface has these methods.

Method Description
IPrintSchemaAsyncOperation::Cancel Cancels the asynchronous PrintSchema operation.
IPrintSchemaAsyncOperation::Start Starts the asynchronous PrintSchema operation.


Any event sink that implements IPrintSchemaAsyncOperationEvent is connected to the associated event source, IPrintSchemaAsyncOperation, via the IConnectionPoint mechanism. You must retrieve a pointer to the IConnectionPoint interface by invoking QueryInterface on the IPrinterQueue object.

Note  It is mandatory to implement IDispatch::Invoke on the event sink that implements IPrinterQueueEvent, since that is the mechanism via which events are raised. It is sufficient to provide stub implementations of the other methods on the IDispatch interface.


Minimum supported client Windows 8
Minimum supported server Windows Server 2012
Target Platform Windows
Header printerextension.h

See Also