ListBox.DropIndicatorVisible
From Xojo Documentation
Property (As Boolean )
aListBox.DropIndicatorVisible = newBooleanValue
or
BooleanValue = aListBox.DropIndicatorVisible
New in 2019r2
Supported for all project types and targets.
or
BooleanValue = aListBox.DropIndicatorVisible
New in 2019r2
Supported for all project types and targets.
Determines whether or not the drop indicators appears. This property simply changes the appearance of the listbox. It does not prevent the new events from firing.