| DirectX SDK | 
The DPCHAT structure contains a DirectPlay chat message. Chat messages are sent with the IDirectPlay4::SendChatMessage method.
typedef struct {
    DWORD dwSize;
    DWORD dwFlags;
    union{
      LPWSTR lpszMessage;
      LPSTR  lpszMessageA;
    };
} DPCHAT, FAR *LPDPCHAT;
  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dplay.h.