This allows Windows to know where to go look for properties for that specific file format. The property handler COM object is compiled into a DLL and registered with the system with regsvr32. This way, if the file is zipped up and emailed, for example, the properties go with it. The implementations details for GetValue and SetValue are left to the developer, so it is up to the developer how and where to store the value for each property - these values could be stored in another file, in an alternate file stream, or in the registry to name a few options - but for transportability reasons it is recommended to store the values in the file itself. Properties are assigned a unique GUID, which the PROPERTYKEY structure passed into these functions contains to identify the property. The interesting methods here are GetValue and SetValue. A property handler has to implement the IPropertyStore interface on top of that: struct IPropertyStore : public IUnknownĪ convenience implementation of this interface is CLSID_InMemoryPropertyStore provided to developers to ease their own implementation of IPropertyStore. COM (Component Object Model) is Microsoft's attempt at a language-independent object oriented framework whose origins go all the way back to the nineties, but for the purposes of this explanation suffice it to say that a COM object is a C++ class that implements the IUnknown interface. Populate file details with generic file info Populate file details with queried properties Look up property handler for the file format Very roughly, the flow of execution is something like this: User clicks file properties The metadata property system is something Microsoft introduced with Windows Vista and it was made open and extensible, enabling independent developers (like Solidworks) to implement and support their own file properties. The details tab in the properties window is populated with metadata property handlers. Registery for the sldprt extension (for reference purpose): I'm not sure this question is a duplicate of Add new metadata properties to a file. Please if you don't have the right solution, do not answer. There are tons of other properties in the details window. I think it's possible since SOLIDWORKS (3d package) adds a property called sw last saved with to all SOLIDWORKS files. This answer of this question does not add attributes to the details tab nor Windows Explorer detailed view. Show how the property's value can be edited. Edit to Windows Registery or whatever part of Windows that is responsible for showing the new property in the details tab of the file properties and in Windows Explorer.Add the property to the file through dsofile, ADS, or whatever means possible.If someone could provide a detailed solution, I would be very thankful. Not sure how this be done with Windows API Code Pack Shell or DSOFile? Any other solution is fine too. The property/value has to be visible in Windows Explorer. I actually want to add a property to the details tab of an existing the file. You can still manually change the view for any folder.I tried looking this on SO but all the questions that attempt to answer do not provide a full answer. All folders will now use this view as the default.A new window will open, click on the ‘View’ tab and press the button ‘Apply to Folders’.Once you’re happy with the select view, click the ‘Organise’ button in the top left of the explorer window and select ‘Folder and Search options’.Right click anywhere in a black space in the explorer window and select ‘Sort by or Group by’ and then select the type you want to be the default – e.g.Select the view style you want to be the default – e.g.Click on the ‘Change your view’ button near the top right of the window.Open Windows Explorer (also known as ‘Computer’ or ‘My Computer’) and open any folder.The following steps detail how to change the default view in Windows Explorer. You can manually change the view for any folder, or select a view then apply to all folders – like setting a default view. Windows 7 offers many different views when browsing files and folder using Windows Explorer (also known as ‘Computer’ or ‘My Computer’).
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