Fullscreen app does not auto-reveal Menu Bar on macOS

[shiqocred]

When the app is in fullscreen mode, the Menu Bar does not auto-reveal when the cursor is moved to the top of the screen.

This behavior differs from standard macOS fullscreen UX, where the Menu Bar and window controls should automatically appear when the cursor reaches the top edge.

I implemented the window setup by copying the example code from the official objc2 documentation:
https://docs.rs/objc2/0.6.3/objc2/

Despite following the documented example, the Menu Bar remains hidden in fullscreen mode, making it difficult to access app menus or exit fullscreen using standard controls.

Actual behavior:
The Menu Bar remains hidden and does not appear.

Expected behavior:
The Menu Bar should auto-reveal when the cursor reaches the top of the screen.

[madsmtm]

You need to add a menubar, see this code in the bit larger default_xcode_app example.

I've changed the example to add one in a9db575, thanks for the report!