Make preview windows focusable, so you can Ctrl+C/Ctrl+V out of it.

[Aaron-Junker]

Summary of the Pull Request

Allows copying with shortcuts out of preview windows (And also stuff like selecting everything with Ctrl+A). And allows using monaco shortcuts (like Ctrl+F) in the dev file previewer

PR Checklist

• Closes: Context menu to copy from markdown preview pane #12637 Explorer add-ons - Preview Pane : Add context menu to copy Markdown files content #30250 [Explorer Preview] Taskbar flashes when clicking into preview pane #6267
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated
• New binaries: Added on the required places
  • JSON for signing for new binaries
  • WXS for installer for new binaries and localization folder
  • YML for CI pipeline for new test projects
  • YML for signed pipeline
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

Files not reviewed (1)

• .github/actions/spell-check/expect.txt: Language not supported

Comments suppressed due to low confidence (1)

src/modules/previewpane/common/controls/FormHandlerControl.cs:133

• Ensure that the removal of the WS_CHILD style and related code is covered by tests to prevent any unintended side effects.

int windowStyle = NativeMethods.GetWindowLong(Handle, gwlStyle);

[github-actions]

@check-spelling-bot Report

🔴 Please review

See the 📂 files view, the 📜action log, or 📝 job summary for details.

Unrecognized words (1)

GWL

These words are not needed and should be removed

ahk AMPROPERTY AMPROPSETID Breadcrumb CDEF comdef ddf devenum DEVMON DEVSOURCE DGR DIIRFLAG dshow DVH DVHD DVSD DVSL EData ERole fdw FILEINFOSIG Filtergraph Filterx gwl HCERTSTORE IKs iljxck IYUV KSPROPERTY lcb ldx lld LONGLONG LTRB majortype makecab MEDIASUBTYPE mediatype mfplat mic mjpg Msimg msiquery ORAW outpin overlaywindow PAUDIO PINDIR Pnp ppmt previouscamera PROPBAG propvarutil reencode reencoded REFGUID REGFILTER REGFILTERPINS REGPINTYPES regsvr shmem sizeread stl strsafe strutil subquery SYNCMFT TMPVAR vcdl vdi vid VIDCAP VIDEOINFOHEADER vih webcam wistd WVC

To accept these unrecognized words as correct and remove the previously acknowledged and now absent words, you could run the following commands

... in a clone of the git@github.com:microsoft/PowerToys.git repository
on the dev/aaron-junker/focus-filePreview branch (ℹ️ how do I use this?):

curl -s -S -L 'https://raw.githubusercontent.com/check-spelling/check-spelling/v0.0.24/apply.pl' |
perl - 'https://github.com/microsoft/PowerToys/actions/runs/13433824444/attempts/1'

Errors (1)

See the 📂 files view, the 📜action log, or 📝 job summary for details.

❌ Errors	Count
❌ ignored-expect-variant	1

See ❌ Event descriptions for more information.

If the flagged items are 🤯 false positives

If items relate to a ...

• binary file (or some other file you wouldn't want to check at all).

  Please add a file path to the excludes.txt file matching the containing file.

  File paths are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your files.

  ^ refers to the file's path from the root of the repository, so ^README\.md$ would exclude README.md (on whichever branch you're using).

• well-formed pattern.

  If you can write a pattern that would match it,
  try adding it to the patterns.txt file.

  Patterns are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your lines.

  Note that patterns can't match multiline strings.

[stefansjfw]

Hi Aaron, sorry for keeping this under review this long. The problem I see with this approach is that preview pane cannot be resized anymore. I assume there are other downsides of making it a non-child window.. So, let's try ti find some other way to make this possible.