As Read Only

Friendly Name As Read Only
API Name AsReadOnly
Type Boolean
Restrictions  
Get Function   (dcl-Control-GetAsReadOnly <CONTROL>)
Set Function   (dcl-Control-SetAsReadOnly <CONTROL> NewValue [as Boolean])
Applies To File Explorer

If this property is set, the initial state of the read only check box is set to checked when the file dialog is shown.