Simple
Frame Site Containment
A container
control is an ActiveX Control that is capable of containing other controls. A
group box that contains a collection of radio buttons is an example of a
container control. Container controls should set the OLEMISC_SIMPLEFRAME status
bit, and should call its container s ISimpleFrameSite implementation. An
ActiveX Control container that supports Container Controls must implement ISimpleFrameSite.
CATID - { 157083E0-2368-11cf-87B9-00AA006C8166}
CATID_SimpleFrameControl