When will `CF_CALLBACK_TYPE_NOTIFY_DEHYDRATE` be invoked

229 ho 20 Reputation points
2024-06-11T13:55:29.0466667+00:00

When the user clicks Free up space in the Explorer menu, CF_CALLBACK_TYPE_NOTIFY_DEHYDRATE and CF_CALLBACK_TYPE_NOTIFY_DEHYDRATE_COMPLETION are not invoked.

In the Cloud Mirror Sample, it uses ReadDirectoryChangesW and checks FILE_ATTRIBUTE_UNPINNED flag to detect if the placeholder is dehydrated by the user, then call a preview API CfDehydratePlaceholder for unknown reasons.

Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
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  1. Xiaopo Yang - MSFT 12,151 Reputation points Microsoft Vendor
    2024-06-12T02:09:06.78+00:00

    Hello @229 ho,

    You can report the issue at https://github.com/microsoft/Windows-classic-samples/issues.

    CF_CALLBACK_TYPE_NOTIFY_DEHYDRATE and CF_CALLBACK_TYPE_NOTIFY_DEHYDRATE_COMPLETION are also not invoked in the Cloud Mirror Sample for me.