CComControlBase::m_bNegotiatedWnd
Flag indicating whether or not the control has negotiated with the container about support for OCX96 control features (such as flicker-free and windowless controls), and whether the control is windowed or windowless.
unsigned m_bNegotiatedWnd: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.
The m_bNegotiatedWnd flag must be TRUE for the m_spInPlaceSite pointer to be valid.
Requirements
Header: atlctl.h