iOSView.ParentTabBar
From Xojo Documentation
Read-Only Property (As iOSTabBar )
Indicates the Tab Bar that is the owner of this View. It is Nil if there is no Tab Bar.
Sample Code
Add a new View to the Tab Bar:
Indicates the Tab Bar that is the owner of this View. It is Nil if there is no Tab Bar.
Add a new View to the Tab Bar: