1697294 - Content processes unable to detect Windows 10 Tablet Mode

Status: ASSIGNED

(Core :: Widget: Win32, defect, P3)

Description

[Chris Martin [:cmartin]]

Steps to reproduce:

1. Goto a site that uses "pointer" media query (https://music.amazon.in/playlists/B07XQHS3PF?refMarker=dm_wcp_af_r&ref_=&)
2. Enable Windows 10 Tablet Mode
3. Notice that nothing changes

Expected: Media queries should return "pointer: coarse" in Windows 10 Tablet Mode

Root cause:
WindowsUIUtils::UpdateTabletModeState requires a window (any window) to successfully query tablet mode, but there are no windows in content process for it to use. So it always fails and the tablet state is always unknown.

Comment 1

[Stephen A Pohl [:spohl] (OOO until 2/27)]

Chris, are you still working on this? I'm adding a couple "see also" bugs that I came across recently since they seem relevant here.

Comment 2

[Chris Martin [:cmartin]]

Thanks, :spohl. I'll try and get some cycles to work on this bug soon.

Comment 3

[Stephen A Pohl [:spohl] (OOO until 2/27)]

This continues to be a priority for Windows Spotlight, but it doesn't fit the S2 severity criteria.