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IWDFWorkItem::Enqueue method (wudfddi.h)

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[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 Enqueue method adds this interface's framework work-item object to the system's work-item queue.

Syntax

void Enqueue();

Return value

None

Remarks

If your driver reuses its work-item objects, the driver can call Enqueue again for the same work item before a worker thread has removed the work item from the queue and called the driver’s OnWorkItem callback function.

However, UMDF won't add the work item to the queue if it is already there. Therefore, your OnWorkItem callback function must process all queued work each time that it is called.

For more information, see Using Work Items.

Requirements

Requirement Value
End of support Unavailable in UMDF 2.0 and later.
Target Platform Desktop
Minimum UMDF version 1.11
Header wudfddi.h
DLL WUDFx.dll

See also

IWDFWorkItem

OnWorkItem