[Lazarus] Modal Window Crashes on Mac OS X 10.15 Beta (Catalina)

Tobias Giesen tobiasgiesen at gmail.com
Tue Jun 11 16:21:41 CEST 2019

yes I tried 32 Bit apps on Catalina and they cannot be run


Please excuse the shortness of this mail which was sent from my mobile phone. If necessary, I will send more information later.

Tobias Giesen

> Am 11.06.2019 um 15:13 schrieb Dmitry Boyarintsev via lazarus <lazarus at lists.lazarus-ide.org>:
>> On Tue, Jun 11, 2019 at 5:49 AM Tobias Giesen via lazarus <lazarus at lists.lazarus-ide.org> wrote:
>> the fix works fine! It does make sense, and maybe Apple changed
>> something in Catalina and they still need to update the documentation.
>> The way aloop() is called now does look like a quick workaround, maybe
>> it is possible to find a better looking way to run it. Maybe there is a
>> different callback or method override where this can be called. But
>> since it works fine, I am quite happy already!
> I wonder if it's related to the official support of UIKit.
> UIApplication doesn't suggest overriding of events handling (it only allows to "preview" an event before it has been executed by UIKit).
> (nothing mentioned in release notes though: https://developer.apple.com/documentation/macos_release_notes/macos_10_15_beta_release_notes)
> The patch has been applied. I left the door open for the original implementation (with run method override).
> By the way, did anyone try 32-bit Carbon app (i.e. Lazarus)? :)
> thanks,
> Dmitry
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