Posts Tagged ‘Property System’

A property lost in tIME

March 25, 2014

The built-in PNG property handler does not support the tIME chunk for some reason. Why? I don’t know and it is only 7 bytes of data that is easy to parse!

We can fix this with a little shell extension. Sadly PSCreateMultiplexPropertyStore is documented to be read-only and I did not check if the system supplied version of IPropertyStore supports aggregation. We could hook the interface methods or do other tricks but just creating a simple wrapper seems to be enough to get a read-only version to work.

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Remove or hide personal information

September 26, 2013

The “Remove Properties and Personal Information” feature (on the details tab of the file properties UI) does not always remove information when you tell it to.

Start off by creating a small jpg image in paint and add some properties:
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