<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
This PR updates the PowerToys solution to support **Visual Studio 2026
(PlatformToolset v145)**. It centralizes the build configuration,
updates the C++ language standards, and fixes an issue with a MouseJump
unit test that appears while using the VS 2026 supported build agent.
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
- [ ] Closes: #xxx
- [x] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [x] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx
<!-- 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
**Build System & Configuration:**
- Updated `Cpp.Build.props` to use `v145` (VS 2026) as the default
`PlatformToolset`, with fall back to `v143` for VS 2022.
- Configured C++ Language Standard:
- `stdcpplatest` for production projects.
- Removed explicit `<PlatformToolset>` definitions from individual
project files (approx. 37 modules) to inherit correctly from the central
`Cpp.Build.props`.
**Code Refactoring & Fixes:**
- Updated `DrawingHelperTests.cs` in MouseJump Unit Test to ease the
pixel difference tolerance. This became an issue after switching to the
new VS2026 build agent.
<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
- Validated successful compilation of the entire solution. Similar
updates have been made to the .NET 10 branch, but these are much cleaner
and will be merged into that branch once fully confirmed working.
---------
Co-authored-by: Kai Tao (from Dev Box) <kaitao@microsoft.com>
Co-authored-by: Gordon Lam (SH) <yeelam@microsoft.com>
* [Deps]Update CppWinRT to 2.0.240111.5
* Apply fix for robmikh.common incompatibility with cppwinrt
* Add CppWinRT to projects that were missing it
* Fix spellcheck
* Init EnvironmentVariables UI project
* Models
TitleBar
MainPage init
Icon
* User and system variables
* Profiles init
* XAML cleanup
* Missing ItemTemplate
* EditDialog
* ModuleInterface
* Signing and processes lists
* Installer
* spellcheck
* Fix ARM64 build and consolidate packages
* spellcheck2
* Fix installer
* Single instance. C# telemetry. Wait on PT pid
* ElevationHelper
* Add profile wip
* Init EnvironmentVariables UI project
* Models
TitleBar
MainPage init
Icon
* User and system variables
* Profiles init
* XAML cleanup
* Missing ItemTemplate
* EditDialog
* ModuleInterface
* Signing and processes lists
* Installer
* spellcheck
* Fix ARM64 build and consolidate packages
* spellcheck2
* Fix installer
* Single instance. C# telemetry. Wait on PT pid
* ElevationHelper
* Add profile wip
* show run as administrator in title (#28516)
* Environment Variables added to Run plugin (#28466)
* UI tweaks
* Remove style
* Add profile - init working
* Applied variables
* Read/Write profiles
* Fixes
* Add separator and fix loading profiles
* Only allow to edit System vars if running elevated
* Add tmp progress ring to show applying changes progress
Ignore not needed json fields
* Remove variable and profile logic
* Do not read data async
Update System and User variables on change
* Add isCorrectlyApplied()
* Sort variables in Applied variables
* WIP WndProc
* spellcheck
* Revert "WIP WndProc"
This reverts commit 0c0b6c67de.
* WHY CRASH???
* UI tweaks
* WIP modified state warning
* Add cancel button in dialogs
* Add buttons validations
* Set variables - fire and forget notify
* Revert "Revert "WIP WndProc""
This reverts commit 1b2306eeb7.
* Listen to WM_SETTINGSCHANGED
Add Infobar reload button
* spellcheck
* spellcheck again
* Fix build
* InfoBar runAsAdmin visibility
* Fix comment
* Confirm dialog when deleting variable
Fix add variable button when creating profile
* Edit profile
* Sort variables on Load
* Select existing variables on edit
* Add default variable
* Fix adding existing vars to profile
* update notice.md
* Handle PATH properly
* Add tooltips and fix dialogs text wrapping
* Fix applied values for duplicates
Fix add/eddit variable txt box validation
* Add horizontal scroll bar for applied values
* Fix duplicate variables handling
Fix user variable handling and preview
* spellcheck
* Try fix spellcheck
* Revert "spellcheck"
This reverts commit ee76231974.
* Revert "Try fix spellcheck"
This reverts commit dc8f04afb9.
* Fix path and duplicates conflict
* Fix PATH handling
Fix unapply on delete active variable
Fix ordering in applied variables
* Show variables as lists and add drag-to-reorder feature
* Only show specific variables as list
Update list in edit dialog on editing the value
* spellcheck
* Update GPO policy
* Add Edit and Remove variable buttons
Remove context menu
* Remove drag&drop when editing list variable and add buttons to move up/down
* Fix Edit profile dialog title
* Fix backup and restore variables when editing variable from applied profile
* Apply var to system WIP
* Tweaks
* Simplify edit variable logic
* Minor fixes
* Spellcheck
* Update src/modules/EnvironmentVariables/EnvironmentVariables/app.manifest
Co-authored-by: Jaime Bernardo <jaime@janeasystems.com>
* spellcheck 2
* Remove unneeded string
* Add more telemetry
* Do not allow adding existing variables with the same name into the profile
* Adding icon
* Fix the crash when opening existing variables dialog
* Update Settings and OOBE screenshots
* Fix crash when malformed profiles.json and jsonignore not needed properties
* Fix selecting duplicates in existing variables dialog
* Add user variable name limit (<255 chars)
Check if profile is applicable on apply
Show message if profile is not applicable
* XamlStyling
* Better Flyout positioning
Add Cancel button to the flyout
* Fix UI glitches by using ItemsControl (no virtualization)
* Fix spellcheck
* Fix XAML style
* Add horizontal scrollbar to applied variables
* Revert to ItemsRepeater
* Fix UI glitches by adding a decent minimum cache
* Fixing UI bugs
* Fix spellcheck
* Fix crash while trying to edit a User variable when there's no Parent
profile
* Fix issue overwriting backup var when you edit var on applied profile
* Fix nuking of variables when adding to applied profile
* Fix profile not being saved when deleting a variable
* Fix ValuesList empty crash, issues and no serialization
* fix spellcheck
* Allow in-line edit of list variables
* Fix xaml style
* Fix add profile variable cancel button logic
* Fix add profile variable cancel button logic - clean the list
* Bump VerticalCacheLength to 10
as in some cases UI glitch on expanding System variables was still present
* Fix profile Add variable button enable/disable logic
* Remove unneeded using
* Add to Dashboard
---------
Co-authored-by: Niels Laute <niels.laute@live.nl>
Co-authored-by: Davide Giacometti <davide.giacometti@outlook.it>
Co-authored-by: Jaime Bernardo <jaime@janeasystems.com>
