Do you mean Rogue Wave Stingray GUI components? Unfortunately, TestComplete does not have any special support for Stringray controls. However, if you compile the tested application as Open, you should be able to access needed properties of the controls from your script.
Also, despite the fact that TestComplete does not have built-in support for the Rogue Wave Stingray Objective Grid control, it is still possible to work with it from script. On our web site, we have sample scripts that demonstrate how to do this. Please see the "Working With Grids" help topic for more information.