c# - 无法在 DLL 中找到入口点

Question

我有一个 C# 应用程序，我试图从中向 C++ 函数发送参数。但是，我收到错误(在主题中提到)

C# 应用程序:

static class SegmentationFunctions
{
[DllImport("MyApplication.dll", EntryPoint = "fnmain", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
        public static extern int fnmain(string search);
    }
}

public partial class MainWindow:Window
{
public MainWindow()
{
InitializeComponent();

string search = "test string here";
int scommand = SegmentationFunctions.fnmain(search);
}

C++ 文件.h

extern "C" QUERYSEGMENTATION_API int fnmain(char query[MAX_Q_LEN]);

C++ 文件.cpp

extern "C" QUERYSEGMENTATION_API int fnmain(char searchc[MAX_LEN_Q])
{

do something...

}

Answer 1

Dependency Walker可以向您展示从 DLL 中有效导出了哪些函数。您将能够查看您的 fnmain 是否存在，或者它是 _fnmain，或者其名称中有 C++ 装饰。