函数原型是这样的:
int WINAPI GetDeliverSMExExEx(ULONG* sm_ID, unsigned char* DestTON, unsigned char* DestNPI, char* DestAddr, unsigned char* OrgTON, unsigned char* OrgNPI, char* OrgAddr, unsigned char* PRI, unsigned char* RP, unsigned char* UDHI, unsigned char* PID, unsigned char* DCS, char* TimeStamp, unsigned long * UDLen, char* UserData, unsigned char* StatusReport,unsigned char* sMsgID, char* sSubmitdate, char* sDonedate, char* sStatus,int iDeliverAckResult);我不明白为什么除了函数本身有一个int类型的返回值外,它里面的那些参数也都是返回值?
这个函数的功能是从短信网关取下发的短信。它里面的参数都是短信的相关信息。
小弟对动态链接库技术不熟,请各位指点。谢谢
int WINAPI GetDeliverSMExExEx(ULONG* sm_ID, unsigned char* DestTON, unsigned char* DestNPI, char* DestAddr, unsigned char* OrgTON, unsigned char* OrgNPI, char* OrgAddr, unsigned char* PRI, unsigned char* RP, unsigned char* UDHI, unsigned char* PID, unsigned char* DCS, char* TimeStamp, unsigned long * UDLen, char* UserData, unsigned char* StatusReport,unsigned char* sMsgID, char* sSubmitdate, char* sDonedate, char* sStatus,int iDeliverAckResult);我不明白为什么除了函数本身有一个int类型的返回值外,它里面的那些参数也都是返回值?
这个函数的功能是从短信网关取下发的短信。它里面的参数都是短信的相关信息。
小弟对动态链接库技术不熟,请各位指点。谢谢
举个例子Private Function abc(ByRef strTemp As String) As String'用ByRef 就是按地址传递
strTemp = "acc"
End Function调用:
Private Sub Command9_Click()
dim aa as string,bb as string
aa=abc(bb)
msgbox bb'这时候,bb就已经被返回了"acc"了
End Sub
如果用byval来定义参数就不会返回了.
如:
Private Function abc(byval strTemp As String) As String'用byval就不会返回参数值了
strTemp = "acc"
End Function