关于VB调用VC++的DLL的问题...

[埃和智能]

以下是VC++写的DLL函数原形，要在VB中调用这个DLL，应该怎么写声明模块？急呀！

void NET_DVR_ReleaseG722Encoder(void *pEncodeHandle);

LONG NET_DVR_StartVoiceCom_MR(LONG lUserID, void(CALLBACK *fVoiceDataCallBack)(LONG lVoiceComHandle,char *pRecvDataBuffer,DWORD )dwBufSize,BYTE byAudioFlag,DWORD dwUser), DWORD dwUser);

[用户 昵称]

'没经过测试
'vb声明
Private Declare Sub NET_DVR_ReleaseG722Encoder Lib "xxx.dll" (pEncodeHandle() As Byte)

'vb调用
dim aaa(0 to xxxx) as byte
NET_DVR_ReleaseG722Encoder( aaa(0) )

'第二个好像c的声明不太对劲

[supergreenbean]

void NET_DVR_ReleaseG722Encoder(void *pEncodeHandle);
declare sub NET_DVR_ReleaseG722Encoder lib "xx.dll" (byval pEncodeHandle as long)

LONG NET_DVR_StartVoiceCom_MR(LONG lUserID, void(CALLBACK *fVoiceDataCallBack)(LONG lVoiceComHandle,char *pRecvDataBuffer,DWORD dwBufSize ,BYTE byAudioFlag,DWORD dwUser), DWORD dwUser);
declare function NET_DVR_StartVoiceCom_MR lib "xx.dll" (byval lUserID as long ,byval fVoiceDataCallBack as long ,byval dwUser as long ) as long


void(CALLBACK *fVoiceDataCallBack))(LONG lVoiceComHandle,char *pRecvDataBuffer,DWORD dwBufSize ,BYTE byAudioFlag,DWORD dwUser)

public sub VoiceDataCallBack(byval lVoiceComHandle as long,byval pRecvDataBuffer as string, byval dwBufSize as long,byval byAudioFlag as byte,byval dwUser as long)

end sub

[用户 昵称]

LONG NET_DVR_StartVoiceCom_MR(LONG lUserID, void(CALLBACK *fVoiceDataCallBack)(LONG lVoiceComHandle,char *pRecvDataBuffer,DWORD )dwBufSize,BYTE byAudioFlag,DWORD dwUser), DWORD dwUser);
这个声明中 LONG lUserID，对应vb中的byval lUserId as long
void(CALLBACK *fVoiceDataCallBack)(LONG lVoiceComHandle,char *pRecvDataBuffer,DWORD )，对应vb中的byval fVoiceDataCallBack as long
可是后面又接了一个dwBuffersize，括号也不匹配

[埃和智能]

衷心感谢以上热心的朋友的帮助！
我也觉得VC++的代码里的括号不匹配，可确实是这样的，类式的函数还有很多如下：

LONG NET_DVR_StartVoiceCom(LONG lUserID, void(CALLBACK *fVoiceDataCallBack)(LONG lVoiceComHandle,char *pRecvDataBuffer,DWORD dwBufSize,BYTE byAudioFlag,DWORD dwUser), DWORD dwUser)

BOOL NET_DVR_SetPlayDataCallBack(LONG lPlayHandle,void(CALLBACK *fPlayDataCallBack) (LONG lPlayHandle, DWORD dwDataType, BYTE *pBuffer,DWORD dwBufSize,DWORD dwUser),DWORD dwUser)

......

要会两种语言就好了，可惜精力有限啊，恳请高手帮助，谢谢！

[Suese]

我是菜鸟，不过最近刚发现，vb调用vc需要在vc里面定义如
int _stdcall hello(……){……}

vb声明我是用的
Public Declare Sub hello Lib "test.dll" (……)
test.dll要放到system32下或者当前目录下，某人告诉我说放在当前目录是中不好的做法，具体的我没听明白，我的那个程序就是放在当前目录读取图片老是出问题，搞得我只好给出完整地址，反正是测试，也没考虑移植啊什么的