File association and file type icon

[hut36]

I'm adding file association to my Tauri app, so far it works as expected, except one problem: on Windows when user chooses to 'always open' a file with my app, the file type icon becomes my app's icon. This is unexpected.

What I want is that besides the app icon, there is another set of icons which are for all the file types that my app supports, embeded in the binary. When user chooses to 'always open' with my app, the file type icon can be changed as expected.

I did some investigation, but still don't have a clue about how to: 1. embed aditional icons into Tauri binary; 2. change file icon as stated above.