EntryPointNotFoundException在一個DLL中，雖然在另一個似乎很好

Question

我有兩個我創建的DLL，它們駐留在Assets/Plugins中。一個似乎工作正常，另一個給我一個EntryPointNotFoundException，即使代碼看起來完全一樣。也許我在VisualStudio中錯過了一些設置？我需要什麼設置？

的作品的一個看起來是這樣的：

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++頭

#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; 
} 

對於一個不工作： 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++頭

#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顯示沒有導出的函數，但在頭文件導出的函數看起來不錯。似乎h文件未包含在cpp文件中。在函數定義中檢查這個放在cpp裏面__declspec(dllexport)。