The instrumented run pinned it down: the FORM is never visible
(form_visible_was=False at all four hide points). What shows is the FMX
taskbar proxy — app=0 at 20.145, app=854682 at 20.974 — so it is created
partway through FormCreate and stayed on screen for the best part of a second
until the first hide that could see it.
A WinEvent hook on EVENT_OBJECT_SHOW, active only for the --tray startup,
hides any top-level window of ours the moment Windows shows it, and is torn
down once MinimizeToTray has run.
Two details that would each have broken it:
- WINEVENT_INCONTEXT, not OUTOFCONTEXT: the latter queues the callback until
the thread pumps messages, which does not happen during FormCreate — exactly
when the proxy appears.
- The pending flag is a unit-level var, not a form field: CreateForm assigns
the MainForm global only after the constructor returns, so a callback firing
during FormCreate could not have reached the form.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
r-zakarya
8fa956f07f
