在一个 DLL 中出现 EntryPointNotFoundException 而在另一个 DLL 中似乎正常
EntryPointNotFoundException in one DLL while seems fine in another
我创建了两个 DLL,它们驻留在 Assets/Plugins 中。一个似乎工作正常,另一个给了我一个 EntryPointNotFoundException,即使代码对我来说看起来完全一样。也许我在 VisualStudio 中遗漏了一些设置?我需要什么设置?
有效的是这样的:
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++ 头文件
#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;
}
对于不起作用的那个:
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++ 头文件
#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;
}
Dependency Walker 显示没有导出函数,但头文件中的导出函数看起来不错。似乎 h
文件未包含在 cpp
文件中。要检查这个,请在函数定义中将 __declspec(dllexport)
放入 cpp 中。
我创建了两个 DLL,它们驻留在 Assets/Plugins 中。一个似乎工作正常,另一个给了我一个 EntryPointNotFoundException,即使代码对我来说看起来完全一样。也许我在 VisualStudio 中遗漏了一些设置?我需要什么设置?
有效的是这样的:
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++ 头文件
#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;
}
对于不起作用的那个: 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++ 头文件
#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;
}
Dependency Walker 显示没有导出函数,但头文件中的导出函数看起来不错。似乎 h
文件未包含在 cpp
文件中。要检查这个,请在函数定义中将 __declspec(dllexport)
放入 cpp 中。