Structure of the Operator Information Area

Personal Communications returns the operator information area in the following structure:
typedef struct tagOIADATA
{
 unsigned unused:12;        // *** unused ***
 unsigned fResponse:1;      // TRUE = DDE_REQUEST response
 unsigned fRelease:1;       // TRUE = Client frees this data
 unsigned reserved:1;       // *** reserved ***
 unsigned fAckReq:1;        // TRUE = Client returns DDE_ACK
 int  cfFormat;             // Format of OIA data CF_DSPTEXT
}  OIADATA, far *lpOIADATA;