Show dialog box for uncaught exception (Windows, lld-link)

[SimonN]

On Sunday, 5 May 2024 at 17:15:10 UTC, Steven Schveighoffer wrote:
>         } catch(Exception e) {
>             visualDisplayOfException(e);
>             throw e;
>         }

Thanks! That's practically the same pattern that I already use 
for logging: Try-catch near the entry point, show the message, 
re-throw. My implementation for the message box is now:

     catch (Throwable t) {
         import core.sys.windows.windows;
         const string errText = /* ... parse t ... */
         MessageBoxA(null, errText.ptr, null, MB_ICONERROR);
     }

That solves my problem. Even though I don't pass my game's window 
as the parent of the message box (first argument, where I pass 
`null`), the graphical game halts before exiting, shows the 
error, and users can screenshot both together. That's good.

 From your answer, I'll assume: There is no standardized way in 
the D ecosystem (e.g., by calling a DRuntime function from my 
usercode) to opt into displaying such a message box for uncaught 
exceptions. I have to call third-party APIs myself.

Or is there something after all? From reading the 2019 thread 
[Deactivate windows MessageBox dialog on 
exception](https://forum.dlang.org/post/tlhjypvsaxzymccfcvsw@forum.dlang.org), it sounds like we should get an error box when we link with `-subsystem:windows`, and no box otherwise.

-- Simon