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SWT Menu Frozen on MacOS [message #1834649]

Sat, 14 November 2020 09:24

Eclipse User

On startup on macOS, my SWT Java apps open correctly and the menu at the top of the screen is drawn, but it is inactive. Clicking on a menu item does nothing. Clicking on the Apple menu also does nothing. If I switch focus to another Mac app and switch back, the menu comes to life, menu item dropdowns work and the menu items themselves do their jobs. The behavior is the same when the app is launched from the Eclipse IDE or standalone. The same apps work normally on Linux GTK.

Eclipse 2020-09, SWT 4.17.
MacBook Pro, macOS Catalina 10.15

Re: SWT Menu Frozen on MacOS [message #1834680 is a reply to message #1834649]

Sun, 15 November 2020 14:11

Eclipse User

I also encountered similar problem many times. I think it's how macos works. Macos GUI is cranky.

Re: SWT Menu Frozen on MacOS [message #1834688 is a reply to message #1834680]

Sun, 15 November 2020 22:49

Eclipse User

I've since made the effort to compile the code externally and wrap it in a Mac bundle. That works normally. Many dev tools advise that a macOS app won't work at all without this step, but it really slows down development. At least I have some functionality launching from Eclipse.

Re: SWT Menu Frozen on MacOS [message #1834851 is a reply to message #1834649]

Thu, 19 November 2020 00:25

Eclipse User

Just CMD+TAB out and CMD+TAB back in again, and the menu works afterwards. This only happens to apps in development mode, but not executable wrapped production apps (e.g. APP/DMG).

Cheers,

Andy

[Updated on: Thu, 19 November 2020 00:27] by Moderator

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