I am looking for examples/library for a file chooser for my project, to work on windows, and mobile. I need to be able to save a file, and load a file.
There is a very old extension for file dialogs. I haven’t used it myself, but it only supports Windows and macOS. You should probably update the extension and extend it to work with mobile SDKs.
If you don’t need a dialog then there is a build-in solution