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[~75% IMPACT] Crash on natural app exit because of composition class issue (XamlApplication) #1775

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opened 2026-01-30 22:36:08 +00:00 by claunia · 3 comments
claunia commented 2026-01-30 22:36:08 +00:00
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Originally created by @DHowett-MSFT on GitHub (Jun 20, 2019).

The "correct" fix for this is to make our XamlApplication AddRef its outer. C++/WinRT generates bad code here. Long term, we need to fix our XamlApplication stack.

Bug 22116519: C++/WinRT composable+composing types don't delegate calls during construction

Originally created by @DHowett-MSFT on GitHub (Jun 20, 2019). The "correct" fix for this is to make our `XamlApplication` `AddRef` its `outer`. C++/WinRT generates bad code here. Long term, we need to fix our XamlApplication stack. _Bug 22116519: C++/WinRT composable+composing types don't delegate calls during construction_
claunia commented 2026-01-30 22:36:10 +00:00
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@mdtauk commented on GitHub (Jun 20, 2019):

Is this one of many problems which goes away when WinUI Desktop comes into existence. Mixing of XAML and Win32 lifecycle.

@mdtauk commented on GitHub (Jun 20, 2019): Is this one of many problems which goes away when WinUI Desktop comes into existence. Mixing of XAML and Win32 lifecycle.
claunia commented 2026-01-30 22:36:10 +00:00
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@DHowett-MSFT commented on GitHub (Jun 20, 2019):

Completely honest: XAML islands is WinUI desktop for right now, and this is an issue they have had to tackle in their bringup as well. Yes, it will go away, but for a while we're trailblazing and feeding our learnings back to them. You're not wrong, though.

@DHowett-MSFT commented on GitHub (Jun 20, 2019): Completely honest: _XAML islands is WinUI desktop for right now, and this is an issue they have had to tackle in their bringup as well_. Yes, it will go away, but for a while we're trailblazing and feeding our learnings back to them. You're not wrong, though.
claunia commented 2026-01-30 22:36:11 +00:00
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@mdtauk commented on GitHub (Jun 20, 2019):

Completely honest: XAML islands is WinUI desktop for right now, and this is an issue they have had to tackle in their bringup as well. Yes, it will go away, but for a while we're trailblazing and feeding our learnings back to them. You're not wrong, though.

It makes sense to continue with the structure as it is now, but every problem you come across, should be "fixed" as WinUI Desktop comes to the fore.

ExtendTitleBar, and naming an element to stand in for the TitleBar dragging - should be in WinUI with Win32 :D

@mdtauk commented on GitHub (Jun 20, 2019): > Completely honest: _XAML islands is WinUI desktop for right now, and this is an issue they have had to tackle in their bringup as well_. Yes, it will go away, but for a while we're trailblazing and feeding our learnings back to them. You're not wrong, though. It makes sense to continue with the structure as it is now, but every problem you come across, should be "fixed" as WinUI Desktop comes to the fore. ExtendTitleBar, and naming an element to stand in for the TitleBar dragging - should be in WinUI with Win32 :D
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Reference: starred/terminal#1775
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