VC中:
typedef struct _TRANSSERV_INFO
{
unsigned long nTransServerIp;
unsigned short nTransServerPort;
char UserName[21];
char Password[21];
}TRANSSERV_INFO;CONSDK_API int __stdcall Con_LoginDVR(unsigned long NetAddr,unsigned short nServPort,char* Password,TRANSSERV_INFO *TransServerInfo=NULL);调用时:Con_LoginDVR(NetAddr,m_ServPort,Password);或Con_LoginDVR(NetAddr,m_ServPort,Password,&TransServerInfo);请问在VB中怎么定义,及调用?
我已经做成:
Type TRANSSERV_INFO
nTransServerIp As Long
nTransServerPort As Long
UserName As String * 21
Password As String * 21
End TypeDeclare Function Con_LoginDVR Lib "ConSDK.dll" (ByVal NetAddr As Long, ByVal nServPort As Long, ByVal Password As String, TransServerInfo As TRANSSERV_INFO) As Long
注意:我想传递NULL给TransServerInfo
typedef struct _TRANSSERV_INFO
{
unsigned long nTransServerIp;
unsigned short nTransServerPort;
char UserName[21];
char Password[21];
}TRANSSERV_INFO;CONSDK_API int __stdcall Con_LoginDVR(unsigned long NetAddr,unsigned short nServPort,char* Password,TRANSSERV_INFO *TransServerInfo=NULL);调用时:Con_LoginDVR(NetAddr,m_ServPort,Password);或Con_LoginDVR(NetAddr,m_ServPort,Password,&TransServerInfo);请问在VB中怎么定义,及调用?
我已经做成:
Type TRANSSERV_INFO
nTransServerIp As Long
nTransServerPort As Long
UserName As String * 21
Password As String * 21
End TypeDeclare Function Con_LoginDVR Lib "ConSDK.dll" (ByVal NetAddr As Long, ByVal nServPort As Long, ByVal Password As String, TransServerInfo As TRANSSERV_INFO) As Long
注意:我想传递NULL给TransServerInfo
解决方案 »
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