Tells a rich edit control that it should transition into or out of context sensitive help mode. A rich edit control calls the ContextSensitiveHelp method of any in place object which is currently active if a state change is occuring.
HRESULT ContextSensitiveHelp(
  BOOL fEnterMode  
);
 Returns success status. Can use GetScode to retrieve an SCODE. Can be S_OK on success or some other value returned by OLE.
  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in richole.h.
Rich Edit Controls Overview, Rich Edit OLE Interfaces, IRichEditOle