IQueueCallbackDefaultIoHandler::OnDefaultIoHandler method (wudfddi.h)
[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]
The OnDefaultIoHandler method handles I/O requests that no other method is registered to handle.
Syntax
void OnDefaultIoHandler(
[in] IWDFIoQueue *pWdfQueue,
[in] IWDFIoRequest *pWdfRequest
);
Parameters
[in] pWdfQueue
A pointer to the IWDFIoQueue interface for the I/O queue object that the default I/O request arrives from.
[in] pWdfRequest
A pointer to the IWDFIoRequest interface that represents the framework request object.
Return value
None
Remarks
A driver registers the IQueueCallbackDefaultIoHandler interface when the driver calls the IWDFDevice::CreateIoQueue method to create an I/O queue or to configure the default I/O queue.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | wudfddi.h (include Wudfddi.h) |