How to display hidden files in a open files dialog box?

[Greg_O]

If you want to do all this without plugins, I put together a pair of classes and put them here:

macOS Save and Open Dialog Classes for accessing more properties

Here’s a project that will let you access Apple’s NSSavePanel and NSOpenPanel through two classes that are completely declare driven. MacFileDialogTest I’ve matched the property names to what Xojo uses where I could, everything else uses the Apple names. Note: In these classes, Filter takes an array of FileType objects, not strings, because I used the Uniform Type Identifiers to look up the underlying classes.