Structure of the Operator Information Area
Personal Communications returns the operator information area in the following
structure:
typedef struct tagOIADATA
{
unsigned char data[(sizeof(DDEDATA)-1)];
unsigned char OIA[80];
} OIADATA;
typedef union tagDDE_OIADATA
{
DDEDATA DDEdata;
OIADATA DDEoia;
} DDE_OIADATA, *lpDDE_OIADATA;