Class: TEgFireGrid
property FontAssigned: Boolean;Read-only, run time only. True once Font has been
assigned or changed, in the form or in code; False while
the cells still use the active style’s font.
The grid applies its Font, and the columns that follow
it, only when this is True (and the platform switch ApplyCustomFontOnDesktop
/ ApplyCustomFontOnMobile
allows it): an untouched Font never replaces the
style’s.