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Framework I/O Target Object

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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.

The archived UMDF 1 samples can be found in the Windows 11, version 22H2 - May 2022 Driver Samples Update.

For more info, see Getting Started with UMDF.

The framework I/O target object is exposed to drivers by the IWDFIoTarget interface. It retrieves information about an I/O target, which typically represents a lower driver in the stack but can also represent another UMDF driver or the kernel-mode portion of the stack. The I/O target object provides UMDF drivers a way to send requests to another device.

UMDF drivers can also use the IWDFIoTargetStateManagement interface to manage and monitor the state of an I/O target object.