来自C ++的C＃包装器类和dllimport

Question

The idea is to make C# wrapper class. I know the structure but I don't know how to use pointers same way or that way it works similarly since my skills in C# doesn't occur. (read translation to C# from C++). If I'm right the memory usage in C# is way different.

The structure is this.

public class Unknown
{
    [DllImport("UnknownSDK.dll")]
    //functions to be translated
}

Functions to be translated:

bool setA(int id, int i);
bool set1(int max, level *many);
bool getA(frame * const * const fame);
void give(frame * const * const fame);

Thanks in advance.

Here is the structure of level:

  typedef struct level {

    int A;
    int B;
    int fade;
} level;

Structure of frame:

  typedef struct frame {

    DWORD header;
    DWORD padding;
    BYTE bpadding[2];
    int asd;
    group_t group[1];
} frame;

I hope this clarifies it a bit. And the main problem I would say is these pointers and * const * const structure in C#. I will also tell you later what my studies taught me but it is still learning so I don't have any test code to show you since I haven't got the whole picture of it yet.

Answer 1

this is the way to import method :

[DllImport("UnKnowSDK.dll")]
private static extern bool setA(int id, int i);

And you can call simply the method like this:

bool res = setA(1,2);

To pass as a parameter a structure is necessary to know its exact structure and replicate it in c #. To manipolate the data you can use:

    Frame fr = new FrameStruct();
fr= (ExchangeStruct)Marshal.PtrToStructure(frame, typeof(FrameStruct));