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PowerToys/src/modules/cmdpal/Microsoft.CmdPal.UI
Jiří Polášek d153f3473a CmdPal: Improve error handling and logging in activation process (#41344)
## Summary of the Pull Request

This PR makes passing arguments from a new instance to the existing one
more resilient:


- Fixes situations where `x-cmdpal://` links might not work as expected.
Instead of performing the intended action (e.g., `x-cmdpal://background`
or `x-cmdpal://settings`), they could incorrectly just summon the main
window.

- Refactors the `AppInstance.Activated` handler to be synchronous.  
- The handler blocks `AppInstance.RedirectActivationToAsync` in the
caller.
- If it runs asynchronously (or offloads work to another thread,
including the UI thread), the calling instance may exit too soon,
preventing the activation arguments from being read.

- Adds a timeout and ensures the semaphore is always released so the
application can exit gracefully under all conditions.

- Adjusts handling for cases where the source application exits before
passing arguments by lowering the log severity to **Warning** and
providing a clearer, more descriptive message.

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [ ] Closes: #xxx
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** yop
- [x] **Localization:** no need
- [x] **Dev docs:** no need
- [x] **New binaries:** none
- [x] **Documentation updated:** nope

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
Tested with x-cmdpal://settings under normal conditions, and with CmdPal
deliberately slowed down to take its sweet time handling the arguments
(so the calling instance times out).
2025-09-02 15:39:59 -05:00
..
2025-03-26 15:09:31 -07:00
2025-09-02 15:31:58 -05:00
2025-06-18 15:08:54 +08:00