Stop my app from quitting!

General
1

I’m trying to stop my app from quitting. It’s currently responding to Command-Q and I can’t seem to intercept it. It’s an app that runs without a MenuBar and without a Dock icon - it’s basically an NSStatusBar app. One of the NSStatusItem’s menu items opens a preferences window and at this point, it’s possible to quit the app with the Command-Q keyboard shortcut.

Apple haven’t documented this but the accepted behavior (going by a few highly regarded MAS NSStatusBar apps) seems to be that a LSUIElement app doesn’t quit by any method other than choosing Quit from the NSStatusItem menu.

So why is my window receiving the Command-Q shortcut? How can I stop it?

2

Use the cancelclose event to intercept this.

3

Sure but the problem is that I can’t intercept Cmd-Q, so I can’t check in CancelClose if the app is quitting from the menu bar (which would be fine) or from a keyboard shortcut (which I don’t want).

4

OK, I am confused.
The Cancelclose event from the main app is triggered whenever you try to quit the app (Cdm+Q, via menubar ‘quit’, …)
The only way to bypass the main cancelclose event is doing a Force Quit. :slight_smile:

5

[quote=31151:@Christoph De Vocht]OK, I am confused.
The Cancelclose event from the main app is triggered whenever you try to quit the app (Cdm+Q, via menubar ‘quit’, …)[/quote]
The user has to be able to quit the app from the menu bar.
If the app has no window open, Cmd-Q (naturally in this case) does nothing.
But if the app has a window open, Cmd-Q quits the app and that’s incorrect behavior.

Do you know what I mean?

6

Have you tried checking if Keyboard.AsyncCommandKey is true in CancelClose? That would most certainly indicate where the event came from.

7

Don’t think that is possible (only quiting from menu bar).

8

Greg, didn’t think of that - works great, thanks.

So, just to satisfy my OCD side - why is my app still receiving the Cmd-Q shortcut at all?

9

I suspect the OS is intercepting and forwarding the event to your app, but we’d need to ask Joe.

10

[quote=31153:@Gavin Smith]The user has to be able to quit the app from the menu bar.
If the app has no window open, Cmd-Q (naturally in this case) does nothing.
But if the app has a window open, Cmd-Q quits the app and that’s incorrect behavior.

Do you know what I mean?[/quote]
I don’t know about “incorrect behavior”. I’m starting to see a lot of apps fully quits on Cmd-Q, even those found in the Mac App Store. I know I get irritated at times when I want to quit an app after hitting that Cmd-Q and the app really isn’t closed. :wink:

11

Gavin, I don’t like checking for the cmd key because it’s not foolproof.

I believe that there’s a cleaner way to do that. I’ve done so in my own LSUIElement app (iClip).

Try this: Provide your own Menu handler for the Quit menu in your App class, and just return true from it. That allows you to properly intercept cmd-Q.

Does that help? If not, ask again and I’ll look into my source code to figure out what else must be done.

12

[quote=31200:@Thomas Tempelmann]Gavin, I don’t like checking for the cmd key because it’s not foolproof.

I believe that there’s a cleaner way to do that. I’ve done so in my own LSUIElement app (iClip).

Try this: Provide your own Menu handler for the Quit menu in your App class, and just return true from it. That allows you to properly intercept cmd-Q.

Does that help? If not, ask again and I’ll look into my source code to figure out what else must be done.[/quote]

Thomas, that is cleaner and satisfies my OCDness - sorted, thanks.