ListBox.CellCheckBoxValueAt

From Xojo Documentation

Property (As Boolean )
aListBox.CellCheckBoxValueAt(Row as Integer, Column as Integer) = newBooleanValue
or
BooleanValue = aListBox.CellCheckBoxValueAt(Row as Integer, Column as Integer)

New in 2019r2

Supported for all project types and targets.

Checks or unchecks the checkbox in the passed cell. Row and Column are zero-based.

Notes

Setting CellCheckBoxValueAt to True checks the checkbox.