在项目中加载DLL后获取地址的问题 [英] Problem in Getting Address after loading DLL in Project

问题描述

我在VS2003中创建了一个解决方案，其中包含两个项目，一个是ABD.exe，另一个是ABC.DLL.
DLL类声明为

Hi,

I have created one solution in VS2003 which contain two project one is ABD.exe and another one is ABC.DLL.
DLL class is declared as

class __declspec(dllexport) Class Name

在DLL类中，我的入口是

In DLL class, my entry point is

unsigned int Convert(string, string)

在我的另一个项目中，我试图通过使用以下代码来调用ABC.dll

From my another project, I am trying to call ABC.dll by using below code

typedef unsigned int (*EntryPointfuncPtr)(string argv_1, string argv_2);

string Lib_File = "ABC.dll";
HINSTANCE LoadMe = LoadLibrary(Lib_File.c_str());

if(LoadME != NULL)
{
  EntryPointfuncPtr LibMain = (EntryPointfuncPtr)GetProcAddress(LoadMe, "Convert");
}

if (LibMain != NULL)
{
  unsigned int nRetVal = LibMain(strIn, strOut);
}
else
{
  cout << "ERROR OCCURED" << endl;
}

我收到一条错误消息:发生了错误".这意味着LibMain为Null.

I am getting an Error Message : "ERROR OCCURED". This means that LibMain is Null.

Can anyone HELP me where I went wrong.?

推荐答案

您的函数名称可能由C++编译器破坏了，您必须使用

Probably the name of your function is mangled by the C++ compiler, you have to use the

extern "C" {
//..
}

构造，请参见此处 [此处 [

construct, see here[^] and here[^]to wrap your function.

帕里尼，

我所有的函数都在一个名为"ABC"的类中声明，其减速度为:

Hi Pallini,

All of my function are declared in one class named as "ABC" and it''s decelration is :

class __declspec(dllexport) ABC
{
  public:
   Convert (string, string);
};

您回复后，我确实是这样的:

After you reply, i did like this:

extern "C"
{
  class __declspec(dllexport) ABC
  {
    public:
     Convert (string, string);
  };
}

并重建了我的dll，但LibMain仍然为NULL

还有其他建议或帮助吗?

And rebuilt my dll but still LibMain is NULL

Any more suggestion or help?

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