Get Thumbnails

Question / Problem

How can I show XYZ as a thumbnail?

Answer / Solution

The thumbnails are generated through the same Windows API function that the Windows Explorer uses, and so the ShellBrowser components will show similar thumbnails like the Windows Explorer.

To provide thumbnails for a certain file format that Windows does not support out of the box, it is best to register a thumbnail provider in the system.

Another option is to use the OnThumbnailUpdated event of the TJamShellList control, which allows you to change the generated thumbnail.

TShellBrowser.SetThumbnailProvider() allows you to set one application-wide thumbnail provider that is called if the system does not supply one.