Hi,
In a ShellTreeView with tvoAllowMultiselect checked, the Ctrl-Click works as expected, as usual, but the Shift-Click doesn't at all.
By the way, the little help located at the bottom of the Objects' Inspector is half wrong : Allows selection of several tree-items, e.g. using Ctrl+click [OK] and Shift+click [not working].
Of course I've checked msControlSelect and msShiftSelect in MultiSelectStyle.Edit : but I discovered that playing with msControlSelect and msShiftSelect unselect tvoAllowMultiselect.

Reselected it and everything's working.
I apologize for the inconvenience (and I cannot delete this topic, dunno why).
Linux Debian 11.9 GTK 2.8 FPC 3.2.2 Laz 3.4
Regards,