eframe: Only call run_return twice on Windows#3053
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emilk merged 1 commit intoemilk:masterfrom Jun 5, 2023
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The approach of emilk#1889 may remove observers in a view twice, which produces the Obj-C Exception: Cannot remove an observer <...> for the key path "nextResponder" from <WinitView ...> because it is not registered as an observer. The above message can only be seen when attaching the application to debugger. Users normally see: [1] *** trace trap cargo run This commit fixes it by only running `event_loop.run_return()` twice on Windows. Besides: * We have set `ControlFlow::Exit` on `Event::LoopDestroyed`, `EventResult::Exit` and on error; therefore, it is safe to not calling `set_exit()`. * This commit also fix the persistence function in macOS. It can't store the content in Memory due to this exception. Fixed: emilk#2768 (eframe: "App quit unexpectedly" on macOS) Signed-off-by: pan93412 <pan93412@gmail.com>
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run_return twice on Windows
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The approach of #1889 may remove observers in a view twice, which produces the Obj-C Exception:
The above message can only be seen when attaching the application to debugger. Users normally see:
This commit fixes it by only running
event_loop.run_return()twice on Windows. Besides:ControlFlow::ExitonEvent::LoopDestroyed,EventResult::Exitand on error; therefore, it is safe to not callingset_exit().Fixed: #2768 (eframe: "App quit unexpectedly" on macOS)
Exception Details
2023-06-04 13:01:02.034869+0800 review-tool[31446:18023641] [Window] Warning: Window WinitWindow 0x102536e60 ordered front from a non-active application and may order beneath the active application's windows. 2023-06-04T05:01:07.146383Z DEBUG eframe::native::epi_integration: Received WindowEvent::CloseRequested 2023-06-04T05:01:07.146439Z DEBUG eframe::native::epi_integration: App::on_close_event returned true 2023-06-04T05:01:07.146456Z DEBUG eframe::native::run: Asking to exit event loop… 2023-06-04T05:01:07.241007Z DEBUG eframe::native::run: Received Event::LoopDestroyed - saving app state… 2023-06-04T05:01:07.241041Z DEBUG eframe::native::run: eframe window closed 2023-06-04 13:01:34.963635+0800 review-tool[31446:18023641] [General] Cannot remove an observer <_NSTouchBarFinderObservation 0x10247fbb0> for the key path "nextResponder" from because it is not registered as an observer. 2023-06-04 13:01:35.012630+0800 review-tool[31446:18023641] [General] ( 0 CoreFoundation 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