[PR #11306] Fix KeyChord constructor assertion failure during tab dragging #28491

New Issue

claunia · 2026-01-31T09:28:51Z

claunia commented

2026-01-31 09:28:51 +00:00

Original Pull Request: https://github.com/microsoft/terminal/pull/11306

State: closed
Merged: Yes

For some weird reason we sometimes receive a WM_KEYDOWN
message without vkey or scanCode if a user drags a tab.
The KeyChord constructor has a debug assertion ensuring that all KeyChord
either have a valid vkey/scanCode. This is important, because this prevents
accidential insertion of invalid KeyChords into classes like ActionMap.

PR Checklist

Closes 0xc0000022 error was occured while opening wt.exe after v1.2.2381.0 (#11076)
I work here
Tests added/passed

Validation Steps Performed

Tab dragging doesn't produce assertion failures anymore ✔️

**Original Pull Request:** https://github.com/microsoft/terminal/pull/11306 **State:** closed **Merged:** Yes --- For some weird reason we sometimes receive a WM_KEYDOWN message without vkey or scanCode if a user drags a tab. The KeyChord constructor has a debug assertion ensuring that all KeyChord either have a valid vkey/scanCode. This is important, because this prevents accidential insertion of invalid KeyChords into classes like ActionMap. ## PR Checklist * [x] Closes #11076 * [x] I work here * [x] Tests added/passed ## Validation Steps Performed * Tab dragging doesn't produce assertion failures anymore ✔️

claunia added the pull-request label 2026-01-31 09:28:51 +00:00

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dev/miniksa/tabs-color-fix

dev/miniksa/4309

dev/migrie/f/just-wrapping

dev/migrie/b/3490-try-another-resize-algo

release-0.8

dev/migrie/b/3490-a-simpler-resize

dev/migrie/b/3490-resize-down

dev/miniksa/4254

dev/migrie/f/conpty-wrapped-lines-2

dev/migrie/b/be-better-at-hiding

dev/migrie/f/3327-xaml-theming-proto

dev/miniksa/gardening2

release-0.7

dev/duhowett/conpty-flags

dev/migrie/f/603-vintage-opacity

dev/migrie/PR#3181-comments

dev/duhowett/font-64

release-0.5

dev/migrie/b/663-paste-lf-always

dev/migrie/b/2011-reordered-fallthrough-strings

dev/migrie/b/411-init-tab-stops

dev/migrie/b/json-patching-is-hard

dev/migrie/b/2455-try-getting-tests-working

dev/migrie/b/1223-change-256-table

dev/migrie/f/2171-openterm.cmd

dev/migrie/f/drag-panes

dev/migrie/f/2046-command-palette

release-0.3

dev/miniksa/manager

dev/migrie/f/non-terminal-panes

dev/migrie/f/passthrough-2019

dev/miniksa/shared_pch

dev/migrie/f/1897-less-duplicated-work

release-0.2

dev/cazamor/mcs/viewport-selection

dev/duhowett/version_hack

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Reference: starred/terminal#28491