Hi all !
I'm just about to use a DLL made in C++, I'll need some help to declare all "TypeDef" and functions in a vb fashion way.
PLEASE GIVE EXPLANATIONS thankls

The most important for now are the CONNECTION_ADDR type and the NetApiConnect method...

Can you help me to understand how the sruct should be declared in VB, and also the method ?
Here's how I declared the "API function in vb so far...

Private Declare Function NetApiConnect Lib "NetApi" (IN CONNECTION_ADDR * prConnAddr,
IN int nNumConnections) As Long

I'm now posting part of the .h file.

typedef struct {
CONNECTION_TYPE eType;
union {
SOCKET_ADDR rSocket;
MODEM_ADDR rModem;
COMM_PORT_ADDR rCommPort;
GENERIC_ADDR rGeneric;
};
} CONNECTION_ADDR;

typedef int (* LOG_CALLBACK)(
IN int nRid,
IN OB_LOG_ENTRY * prObLogEntry,
IN unsigned long nCallbackParameter
);

typedef enum {
SOCKET_TYPE,
MODEM_TYPE,
COMM_PORT_TYPE,
UNKNOWN_CONN_TYPE,
_LAST_CONN_TYPE
} CONNECTION_TYPE;

typedef struct {
unsigned long ulIpAddress;
char acHost[ MAX_HOST_NAME_LEN ];
unsigned short nPort;
} SOCKET_ADDR;

typedef struct {
char acCallString[64];
} MODEM_ADDR;

typedef struct {
int nPort;
} COMM_PORT_ADDR;

typedef struct {
char acData[ CONNECTION_ADDR_MIN_SIZE ];
} GENERIC_ADDR;

typedef struct _SESSION * SESSION_ID;
typedef struct _REQUEST * REQUEST_ID;
typedef int (* VIDEO_CALLBACK)(
IN int nRid,
IN OB_VIDEO * prObVideo,
IN int nError,
IN SESSION_ID hSessionId,
IN REQUEST_ID hRequestId,
IN unsigned long nCallbackParameter
);
typedef enum {
SEEK_TIME_ABSOLUTE,
SEEK_TIME_LIVE,
SEEK_TIME_BEFORE,
SEEK_TIME_AFTER,
SEEK_NEXT,
SEEK_PREV,
SEEK_GET_TIME,
SEEK_GET_TIME_AND_RID
} SEEK_TYPE;

#define PLAYBACK_REVERSE 0x01
#define PLAYBACK_FRAME_CURRENT 0x02
#define PLAYBACK_FRAME_ALL 0x04
#define PLAYBACK_REAL_TIME 0x08
#define PLAYBACK_NO_DROPS 0x10
#define PLAYBACK_LIVE_MODE 0x20

typedef enum {
CFG_LIVE_MODE_QUALITY,
CFG_VERSION,
CFG_NO_SEEK_ON_CONNECT,
} CONFIG_TYPE;

typedef struct {
char acVersion[64]; // Version label. May or may not be specified.
// Empty string if unspecified.
unsigned long nMajor;
unsigned long nMinor;
unsigned long nPatch;
unsigned long nBuildNo;
} VERSION_INFO;
#undef DLL_DECLSPEC
#ifdef NETAPI_EXPORTS
#define DLL_DECLSPEC __declspec(dllexport)
#else
#define DLL_DECLSPEC __declspec(dllimport)
#endif

DLL_DECLSPEC int
NetApiConnect(
IN CONNECTION_ADDR * prConnAddr,
IN int nNumConnections
);

DLL_DECLSPEC int
NetApiDisconnect(
);

DLL_DECLSPEC int
NetApiGetResources(
OUT OB_RESOURCE ** pprResources,
OUT int * pnNumResources
);

DLL_DECLSPEC int
NetApiGetRid(
IN int nUniqueId,
IN RESOURCE_TYPE eType,
IN int nParameter
);

DLL_DECLSPEC int
NetApiGetObject(
IN int nRid,
IN RVCOBTYPE eObject,
OUT void * pvObject,
IN int nSize,
OUT int * pnPercentRemaining
);

DLL_DECLSPEC int
NetApiSetObject(
IN int nRid,
IN RVCOBTYPE eObject,
IN void * pvObject,
IN int nSize,
OUT int * pnPercentRemaining
);

DLL_DECLSPEC int
NetApiVideoPlay(
IN int * pnRids,
IN int nNumRids,
IN int nMainVideoIndex,
IN VIDEO_CALLBACK pCallback,
IN unsigned long nCallbackParameter,
IN int nFlags
);

DLL_DECLSPEC int
NetApiVideoStop(
);

DLL_DECLSPEC int
NetApiVideoSeek(
IN OUT FILETIME * pnTime,
IN SEEK_TYPE eSeekType,
OUT BOOL * pbSeekHit
);

DLL_DECLSPEC int
NetApiLogUpdateSection(
IN LOG_TYPE eLog,
IN int nFirstEntry,
IN int nNumEntries,
IN LOG_CALLBACK pCallback,
IN unsigned long nCallbackParameter,
IN int nFlags
);

DLL_DECLSPEC int
NetApiLogGetSize(
IN LOG_TYPE eLog
);

DLL_DECLSPEC void
NetApiGetCfg(
IN CONFIG_TYPE eConfigType,
OUT void * pvConfigData,
IN int nConfigSize
);

DLL_DECLSPEC void
NetApiSetCfg(
IN CONFIG_TYPE eConfigType,
OUT void * pvConfigData,
IN int nConfigSize
);

DLL_DECLSPEC int
NetApiGetConnectionStatus(
IN int nConnection,
OUT int * pnLine,
OUT char ** ppcFile,
OUT int * pnExtendedError
);

DLL_DECLSPEC char *
NetApiGetLastErrors(
);

/*
* Undocumented function
*/
DLL_DECLSPEC char *
ErrString(
IN int nErr
);

#ifdef __cplusplus
}
#endif

#endif