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IQueueCallbackDeviceIoControl 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 object notifies a driver when a device I/O control request is available for the driver. The I/O queue object notifies the driver in response to an application calling the Microsoft Win32 DeviceIoControl function. The driver can handle the notification by registering the IQueueCallbackDeviceIoControl interface.

Inheritance

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

  • Methods

Methods

The IQueueCallbackDeviceIoControl interface has these methods.

 
IQueueCallbackDeviceIoControl::OnDeviceIoControl

The OnDeviceIoControl method is called to handle a device I/O control request when an application performs a specific operation on a device through the Microsoft Win32 OnDeviceIoControl function.

Remarks

A driver registers the IQueueCallbackDeviceIoControl 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