從C++通過單聲道傳遞數組到C＃通過單聲道

我需要從C++傳遞數組到C＃。但我無法獲得mono_array_set（）來編譯。那麼我怎樣才能將一個數組從C++傳遞給C＃？從C++通過單聲道傳遞數組到C＃通過單聲道

我試過mono_runtime_invoke（）編譯但給出了一個運行時錯誤。

mcs /nologo /warn:4 /debug:pdbonly /o /nowarn:3003 /platform:x64 /out:array.dll /target:library array.cs 
g++ array.cpp -g3 `pkg-config --cflags --libs mono-2` -o array 
<snip> 
array.cpp:32:5: note: in expansion of macro ‘mono_array_set’

// array.cpp 
#include <mono/jit/jit.h> 
#include <mono/metadata/assembly.h> 
#include <mono/metadata/debug-helpers.h> 

int main(int argc, char* argv[]) { 
    MonoDomain* domain = mono_jit_init("./array.dll");; 
    MonoAssembly* assembly = mono_domain_assembly_open(domain, "./array.dll"); 
    MonoImage* image = mono_assembly_get_image(assembly); 

    MonoClass* containsClass = mono_class_from_name(image, "IntArray", "ContainsAnInt"); 
    MonoMethodDesc* containsDesc = mono_method_desc_new("IntArray.ContainsAnInt:.ctor(int)", false); 
    MonoMethod* containsCtor = mono_method_desc_search_in_class(containsDesc, containsClass); 
    MonoObject* containsObject = mono_object_new(domain, containsClass); 

    void* args[1]; 
    int value = 7; 
    args[0] = &value; 

    MonoObject* exception = NULL; 
    mono_runtime_invoke(containsCtor, containsObject, args, &exception); 

    MonoClass* unpackageClass = mono_class_from_name(image, "IntArray", "Unpackage"); 

    args[0] = containsObject; 
    MonoMethodDesc* returnIntDesc = mono_method_desc_new("IntArray.Unpackage:ReturnInt(IntArray.ContainsAnInt)", true); 
    MonoMethod* returnIntMethod = mono_method_desc_search_in_class(returnIntDesc, unpackageClass); 
    mono_runtime_invoke(returnIntMethod, NULL, args, &exception); // <--- as expected, outputs "In ReturnInt: 7" 

    MonoArray* theArray = mono_array_new(domain, containsClass, 1); 
    //// Following will not compile 
    mono_array_set(theArray, MonoClass*, 0, containsObject); 
    //// 
    MonoMethodDesc* returnElementDesc = mono_method_desc_new("IntArray.Unpackage:ReturnElement(IntArray.ContainsAnInt[])", true); 
    MonoMethod* returnElementMethod = mono_method_desc_search_in_class(returnElementDesc, unpackageClass); 
    mono_runtime_invoke_array(returnElementMethod, NULL, theArray, &exception); // <--- should output "In ReturnElement: 7" 

    mono_jit_cleanup(domain); 
}

// array.cs 
using System; 
using System.IO; 

namespace IntArray { 
    public class ContainsAnInt { 
     public ContainsAnInt(int i) { IntValue = i; } 
     public int IntValue { get; set; } 
    } 
    public class Unpackage { 
     public static int ReturnInt(ContainsAnInt n) { 
      Console.WriteLine("In ReturnInt: " + n.IntValue); 
      return n.IntValue; 
     } 
     public static int ReturnElement(ContainsAnInt[] n) { 
      Console.WriteLine("In ReturnElement: " + n[0].IntValue); 
      return n[0].IntValue; 
     } 
    } 
}

來源

2015-06-02 Howard Rubin

這工作：

MonoArray* theArray = mono_array_new(domain, containsClass, 1); 
mono_array_set(theArray, MonoObject*, 0, containsObject); 
args[0] = theArray; 
mono_runtime_invoke(returnElementMethod, NULL, args, &exception); // <--- as expected, outputs "In ReturnElement: 7"

來源

2015-06-03 14:41:51

這也適用，因爲我能夠定義具有完全相同的佈局System.Drawing中C結構.PointF。如果我需要從C++填充C＃類的數組，那麼仍然沒有答案？

MonoArray* arrayPtF = mono_array_new(domain, ptFClass, 2); 
struct cpoint { 
    float x, y; 
} mycpoint[] = { { 42, 1701 }, { 1701, 42 } }; 
mono_array_set(arrayPtF, cpoint, 0, mycpoint[0]); 
mono_array_set(arrayPtF, cpoint, 1, mycpoint[1]);

來源

2017-03-10 17:21:53

從C++通過單聲道傳遞數組到C＃通過單聲道

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