使用 windows API 检索和设置文件详细信息？

Question

I'm not able to programmatically get/set file details on Windows.

I managed to get file size, creation time, last access, but those are information I don't actually need.

I'd like to get/set information like "Author" or "Tag" or every other information you can see in the Details tab in the Properties window of a file, even custom ones (which may vary depending of the file itself).

Answer 1

These are properties . Here is a how-to example: https://github.com/microsoft/Windows-classic-samples/tree/main/Samples/Win7Samples/winui/shell/appplatform/PropertyEdit

In case the link above will break, here are the core functions to use:

SHGetPropertyStoreFromParsingName

This will return a IPropertyStore

You can enumerate it by using IPropertyStore::GetCount and IPropertyStore::GetAt

Then, for each of the keys, you can IPropertyStore::GetValue and IPropertyStore::SetValue

Answer 2

The properties you are referring to you are not a feature of the file system. Rather they are metadata stored within specific known file formats.

Windows is aware (through file format specific property handlers ) of specific formats such as Office documents and common media files, and can extract and present that information via the Windows Property System .

There a number of examples, including propertyedit which is a command line tool that demonstrates how to set, get, enumerate and inspect the schema of any file that has a property handler associated with it.

Perhaps of some interest also in the UWP API, that information can be accessed via various classes in the Windows.Storage.FileProperties namespace.