Dynamic-data-exchange initiation structure.

typedef struct _DDEINIT {
  ULONG     cb;              /*  Length of structure. */
  PSZ       pszAppName;      /*  Application name. */
  PSZ       pszTopic;        /*  Topic. */
  ULONG     offConvContext;  /*  Conversation context. */
} DDEINIT;

typedef   DDEINIT   * PDDEINIT ;