Informs an object if its container can support it as a windowless object that can be in-place activated.
HRESULT CanWindowlessActivate(void);
If this method returns S_OK, the container can dispatch events to it using IOleInPlaceObjectWindowless.
If this method returns S_FALSE, the object should create a window and behave as a normal compound document object.
Windows NT: Use version 4.0 or later. New for OC96.
Windows: Use Windows 95 or later. New for OC96.
Windows CE: Unsupported.
Header: Declared in ocidl.h.