EntryPointNotFoundException在一个DLL中，虽然在另一个似乎很好

Question

我有两个我创建的DLL，它们驻留在Assets/Plugins中。一个似乎工作正常，另一个给我一个EntryPointNotFoundException，即使代码看起来完全一样。也许我在VisualStudio中错过了一些设置？我需要什么设置？

的作品的一个看起来是这样的：

C＃

[DllImport("winBlinkDetect")] 
    private static extern void IsSeven(ref int x); 

[DllImport("winBlinkDetect")] 
    private static extern int PrintFive(); 

void Start() 
    { 
     int test = 0; 
     Debug.Log("x = " + test); 
     IsFive(ref test); 
     Debug.Log("x = " + test); 
     Debug.Log(PrintFive()); 
    } 

C++头

#if _MSC_VER // this is defined when compiling with Visual Studio 
#define EXPORT_API __declspec(dllexport) // Visual Studio needs annotating exported functions with this 
#define _USE_MATH_DEFINES 
#else 
#define EXPORT_API // XCode does not need annotating exported functions, so define is empty 
#endif 

#ifdef __cplusplus 
extern "C" { 
#endif 

    void EXPORT_API IsFive(int *y); 
    void EXPORT_API IsSeven(int *x); 
    int EXPORT_API PrintFive(); 


#ifdef __cplusplus 
} 
#endif 
C++ .cpp 

void IsFive(int *y) 
{ 
    *y = 5; 
} 

void IsSeven(int *x) 
{ 
    *x = 7; 
} 

int PrintFive() 
{ 
    return 99; 
} 

对于一个不工作： C＃

[DllImport("brain")] 
    private static extern int GiveNinetyNine(); 

    [DllImport("brain")] 
    private static extern void IsFive(ref int x); 

void Start() 
    { 
     int test = 0; 
     Debug.Log("x = " + test); 
     IsFive(ref test); 
     Debug.Log("x = " + test); 
     Debug.Log(GiveNinetyNine()); 
    } 

C++头

#if _MSC_VER // this is defined when compiling with Visual Studio 
#define EXPORT_API __declspec(dllexport) // Visual Studio needs annotating exported functions with this 
#define _USE_MATH_DEFINES 
#else 
#define EXPORT_API // XCode does not need annotating exported functions, so define is empty 
#endif 

#include <string>; 

#ifdef __cplusplus 
extern "C" { 
#endif 

    // test functions 
    void EXPORT_API IsFive(int *y); 
    void EXPORT_API IsSeven(int *x); 
    int EXPORT_API GiveNinetyNine(); 
#ifdef __cplusplus 
} 
#endif 
C++ .cpp 

void IsFive(int *y) 
{ 
    *y = 5; 
} 

void IsSeven(int *x) 
{ 
    *x = 7; 
} 

int GiveNinetyNine() 
{ 
    return 99; 
} 

Answer 1

Dependency Walker显示没有导出的函数，但在头文件导出的函数看起来不错。似乎h文件未包含在cpp文件中。在函数定义中检查这个放在cpp里面__declspec(dllexport)。