[Bug 58548] New: user32/menu: Sub‑menus always open instantly – TrackPopup/TrackMenu code ignores SPI_GETMENUSHOWDELAY and MenuShowDelay in registry

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58548

Bug ID: 58548
           Summary: user32/menu: Sub‑menus always open instantly –
                    TrackPopup/TrackMenu code ignores SPI_GETMENUSHOWDELAY
                    and MenuShowDelay in registry
           Product: Wine
           Version: 7.7
          Hardware: aarch64
                OS: MacOS
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]

Observed:
Registry setting HKEY_CURRENT_USER\Control Panel\Desktop\MenuShowDelay is set
to the intended default value (400).
SystemParametersInfoW(SPI_GETMENUSHOWDELAY) returns the configured value (e.g.
400 ms).
Yet any Win32 app (Task Manager, Notepad++, etc.) opens sub‑menus with zero
delay; mousing past them collapses/opens instantly.

Expected:
Menu pop‑ups wait <MenuShowDelay> ms before showing, matching Windows behaviour
since Win 95.

This bug leads to having to "tightrope" sub-menu selections, carefully moving
the cursor along a selection to prevent the sub-menu from collapsing.

This was reported back in 2009 by a user that was advised to file a Bugzilla
report, but none seems to have ever been made:
https://forum.winehq.org/viewtopic.php?t=4147

At a quick glance through /wine/dlls/win32u/menu.c, it seems like menu-show
delays were never implemented at all, and I can only hope this is worth fixing
to improve user experience after all these years :)