Bug 224793 – [Win] GetDoubleClickTime() returns 0 in the non-interactive window station on Windows 10 version 2004

• Status: RESOLVED
• Resolution: FIXED
• Component: Tools / Tests

[Fujii Hironori]

[Win][WK1] Some editing and events tests are failing if running as admin in Windows 10 20H2

The following tests are failing in Windows 10 20H2.

  editing/deleting/smart-delete-across-editable-boundaries-2.html [ Failure ]
  editing/deleting/smart-delete-paragraph-005.html [ Failure ]
  editing/selection/5057506-2.html [ Failure ]
  editing/selection/5195166-1.html [ Failure ]
  editing/selection/anchor-focus1.html [ Failure ]
  editing/selection/click-in-focusable-link-should-not-clear-selection.html [ Failure ]
  editing/selection/double-click-selection-with-dom-mutation.html [ Failure ]
  editing/selection/doubleclick-beside-cr-span.html [ Failure ]
  editing/selection/doubleclick-crash.html [ Failure ]
  editing/selection/doubleclick-inline-first-last-contenteditable.html [ Failure ]
  editing/selection/doubleclick-japanese-text.html [ Failure ]
  editing/selection/doubleclick-whitespace.html [ Failure ]
  editing/selection/extend-after-mouse-selection.html [ Failure ]
  editing/selection/extend-selection-after-double-click.html [ Failure ]
  editing/selection/fake-doubleclick.html [ Failure ]
  editing/selection/mixed-editability-1.html [ Failure ]
  editing/selection/paragraph-granularity.html [ Failure ]
  editing/selection/select-from-textfield-outwards.html [ Failure ]
  editing/selection/selection-actions.html [ Failure ]
  editing/selection/shift-click.html [ Failure ]
  editing/selection/triple-click-in-pre.html [ Failure ]
  editing/selection/user-select-all-with-shift.html [ Failure ]
  editing/selection/word-granularity.html [ Failure ]
  editing/undo/undo-smart-delete-reversed-selection.html [ Failure ]
  editing/undo/undo-smart-delete-word.html [ Failure ]
  fast/events/5056619.html [ Failure ]
  fast/events/click-count.html [ Failure ]
  fast/events/dblclick-addEventListener.html [ Failure ]
  fast/events/mouse-click-events.html [ Failure ]
  fast/events/ondragenter.html [ Failure ]
  fast/events/selectstart-by-double-triple-clicks.html [ Failure ]
  fast/events/updateLayoutForHitTest.html [ Failure ]
  fast/events/zoom-dblclick.html [ Failure ]
  fast/text/offsetForPosition-complex-fallback.html [ Failure ]
  
However, those tests are passing if running as a normal user.
DumpRenderTree.exe should be run as admin for CreateWindowStation API.

[Fujii Hironori]

Because AppleWin marks all editing/selection as flaky, it's not easy to observe this issue. But, AppleWin also has this issue.

> editing/selection/ [ Pass Failure ]

https://github.com/WebKit/WebKit/blob/a13091fa25bc02a82063ea6cfb65faae6ed8006a/LayoutTests/platform/win/TestExpectations#L1229

[Fujii Hironori]

Created attachment 426641 [details]
WIP patch

GetDoubleClickTime() returns 0 in the window station.

[Fujii Hironori]

SetDoubleClickTime also fails in the window station.
GetLastError() returns ERROR_REQUIRES_INTERACTIVE_WINDOWSTATION.

[Fujii Hironori]

winapi - GetDoubleClickTime returns 0 unexpectedly - Stack Overflow
https://stackoverflow.com/q/63466907

Bug in Windows 10 Version 2004: GetDoubleClickTime unexpectedly returns 0 when Batch Login is used | Wolfsbeeren
https://www.neunbeere.de/blog/2020/08/bug-in-windows-10-version-2004-getdoubleclicktime-unexpectedly-returns-0-when-batch-login-is-used/

[Fujii Hironori]

Created attachment 426654 [details]
Patch

[Alex Christensen]

Comment on attachment 426654 [details]
Patch

WebEventFactory.cpp also calls GetDoubleClickTime.
This should be put into a shared function and used by both.

[Fujii Hironori]

Created attachment 426765 [details]
Patch

[Fujii Hironori]

Comment on attachment 426765 [details]
Patch

Clearing flags on attachment: 426765

Committed r276421 (236886@main): <https://commits.webkit.org/236886@main>

[Fujii Hironori]

All reviewed patches have been landed.  Closing bug.

[Ling Ho]

<rdar://76999405>