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Framework Driver 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 driver object is exposed to drivers by the IWDFDriver interface. It is the framework representation of the driver image loaded in the driver host process. The framework creates a new driver object for each driver loaded in the driver host process. The IWDFDriver interface is passed to the driver by the IDriverEntry::OnInitialize method, which is the main entry point for the user-mode driver.