IQueueCallbackCreate interface (wudfddi.h)

  • Article

[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.]

An I/O queue notifies a driver when an open file request is available for the driver. The I/O queue notifies the driver in response to an application calling the Microsoft Win32 CreateFile function. The driver can handle the notification by registering the IQueueCallbackCreate interface.

Inheritance

The IQueueCallbackCreate interface inherits from the IUnknown interface. IQueueCallbackCreate also has these types of members:

  • Methods

Methods

The IQueueCallbackCreate interface has these methods.

 
IQueueCallbackCreate::OnCreateFile

The OnCreateFile method is called to handle an open file request when an application opens a device through the Microsoft Win32 CreateFile function.

Remarks

A driver registers the IQueueCallbackCreate interface when it calls the IWDFDevice::CreateIoQueue method to create an I/O queue or to configure the default I/O queue. For more information about creating or configuring an I/O queue, see Configuring Dispatch Mode for an I/O Queue.

Requirements

Requirement Value
Target Platform Windows
Header wudfddi.h