vb 调用 VC7 dll

[ttlb]

VC7中 dll中的 函数定义
extern "C" BSTR __declspec(dllexport) eomDoConversation(BSTR str)
{
return SysAllocString(L"SSSSSSSS");
}

VB 调用：
Private Declare Function eomDoConversation Lib "EomIA.dll" (ByVal fromClient As Long) As String
Dim InString As String
Dim OutString As String
OutString = eomDoConversation(StrPtr(InString))

每次都说“bad dll calling convention”
我把C++的调用约定改为"__cdecl (/Gd)"还是不行，怎么回事呀？

[ttlb]

如果设成 stdcall， 就说找不到入口

[ttlb]

up

[oyljerry]

为了兼容，要用WINAPI /STDCALL等标准函数调用约定

[yayaniuniu502]

vb调用vc7的dll?没试过，但是vc６的用过可以，没遇到你的问题