IFileCallbackClose interface

[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 framework can notify a driver when the driver should perform a close operation. The driver can handle the notification by registering the IFileCallbackClose interface.

A driver registers the IFileCallbackClose interface when it calls the IWDFDriver::CreateDevice method to create a device object.


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


The IFileCallbackClose interface has these methods.


The OnCloseFile method is called when the last reference count on a file object goes down to zero and before the file object is released.







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