CComControlBase::m_bWindowOnly
Flag indicating the control should be windowed, even if the container supports windowless controls.
unsigned m_bWindowOnly:1;
Remarks
Note
To use this data member within your control class, you must declare it as a data member in your control class. Your control class will not inherit this data member from the base class because it is declared within a union in the base class.
Requirements
Header: atlctl.h