# window close button 64-bit not working **URL:** \ **Category:** macOS\ **Created:** [November 6, 2015, 1:46pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866 "2015-11-06T13:46:23Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Boudewijn\_Krijger](https://forum.xojo.com/user_avatar/forum.xojo.com/boudewijn_krijger/32/591_2.png) [@Boudewijn\_Krijger](https://forum.xojo.com/u/Boudewijn_Krijger)\ **Post date:** [November 6, 2015, 1:46pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/1 "2015-11-06T13:46:23Z")
Odd behaviour; my App compiles and runs fine in both 64 bit and 32 bit. But closing the main window on the 64-bit version, causes a hang, whilst the 32-bit version closes and quit just fine. App.open has autoquit = true and cancelclose has a quit. Any ideas why the 64-bit behaves differently? ---
**Author:** ![Greg\_O\_Lone](https://forum.xojo.com/user_avatar/forum.xojo.com/greg_o_lone/32/49_2.png) [@Greg\_O\_Lone](https://forum.xojo.com/u/Greg_O_Lone)\ **Post date:** [November 6, 2015, 1:50pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/2 "2015-11-06T13:50:12Z")
I suspect you’ve got an infinite loop by calling quit in CancelClose. ---
**Author:** ![Boudewijn\_Krijger](https://forum.xojo.com/user_avatar/forum.xojo.com/boudewijn_krijger/32/591_2.png) [@Boudewijn\_Krijger](https://forum.xojo.com/u/Boudewijn_Krijger)\ **Post date:** [November 6, 2015, 1:51pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/3 "2015-11-06T13:51:56Z")
@Greg O’Lone : How could I just have an infinite loop when compiling 64-bit? ---
**Author:** ![Greg\_O\_Lone](https://forum.xojo.com/user_avatar/forum.xojo.com/greg_o_lone/32/49_2.png) [@Greg\_O\_Lone](https://forum.xojo.com/u/Greg_O_Lone)\ **Post date:** [November 6, 2015, 2:24pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/4 "2015-11-06T14:24:42Z")
Please try it. It wouldn’t surprise me if calling Quit in CancelClose triggers another CancelClose event… or at least, don’t call Quit when AppQuitting=True ---
**Author:** ![Boudewijn\_Krijger](https://forum.xojo.com/user_avatar/forum.xojo.com/boudewijn_krijger/32/591_2.png) [@Boudewijn\_Krijger](https://forum.xojo.com/u/Boudewijn_Krijger)\ **Post date:** [November 6, 2015, 3:19pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/5 "2015-11-06T15:19:32Z")
@Greg O’Lone : I tried a few variations and removing the close and cancelclose events from the App, and retaining a quit in the Main window’s CancelClose worked. It’s a tad confusing but at least it quits now in both 32-bit and 64-bit. Thanks Greg ---
**Author:** ![Roger\_Clary](https://forum.xojo.com/letter_avatar_proxy/v4/letter/r/eada6e/32.png) [@Roger\_Clary](https://forum.xojo.com/u/Roger_Clary)\ **Post date:** [November 6, 2015, 4:07pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/6 "2015-11-06T16:07:40Z")
As Greg has advised you, calling quit from cancelClose is not the correct construct. CancelClose needs to return a Boolean, then the app closes. By leaving it the way you have it, you are asking for more trouble down the road. ---
**Author:** ![Sascha\_S](https://forum.xojo.com/user_avatar/forum.xojo.com/sascha_s/32/22328_2.png) [@Sascha\_S](https://forum.xojo.com/u/Sascha_S)\ **Post date:** [November 6, 2015, 4:46pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/7 "2015-11-06T16:46:42Z")
> [@227173:@Roger Clary](#): > > As Greg has advised you, calling quit from cancelClose is not the correct construct. CancelClose needs to return a Boolean, then the app closes. By leaving it the way you have it, you are asking for more trouble down the road. I short words: just Return False in the CancelClose Event, to close the App 😉 Understand the CancelClose Event as a question “Cancel the close event?”. You return FALSE if you don’t want to cancel it. 🙂 ---
**Author:** ![Boudewijn\_Krijger](https://forum.xojo.com/user_avatar/forum.xojo.com/boudewijn_krijger/32/591_2.png) [@Boudewijn\_Krijger](https://forum.xojo.com/u/Boudewijn_Krijger)\ **Post date:** [November 7, 2015, 9:15am UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/8 "2015-11-07T09:15:36Z")
Thank you all for the replies, now I finally know the proper way to quit, I’m always thrown off by double negatives 😉 ---
**Author:** ![system](https://forum.xojo.com/uploads/default/original/1X/455b4dcc0e61630e9f81940004ddffa49c432a46.png) [@system](https://forum.xojo.com/u/system)\ **Post date:** [October 29, 2020, 6:02pm UTC](https://forum.xojo.com/t/window-close-button-64-bit-not-working/27866/9 "2020-10-29T18:02:48Z")