Pinvoke结构 [英] Pinvoke for struct

问题描述

我具有以下结构定义:

#ifndef struct_emxArray_real_T
#define struct_emxArray_real_T
struct emxArray_real_T
{
    real_T *data;
    int32_T *size;
    int32_T allocatedSize;
    int32_T numDimensions;
    boolean_T canFreeData;
};
#endif /*struct_emxArray_real_T*/

，并希望通过PInvoke在C#中使用它.该结构旨在表示一个矩阵.任何C#结构代码将不胜感激.谢谢！

and would like to use it in C# via PInvoke. The struct is meant to represent a matrix. Any C# struct code would be very much appreciated. Thanks!

有人在此处进行了尝试:

[StructLayout(LayoutKind.Sequential, Size = 1)]
public unsafe struct mytype
{
public double* data;
public int* size;
public int allocatedSize;
public int numDimensions;
public bool canFreeData;
}

但没有使其正常工作.

推荐答案

C#结构不支持指针类型.

C# structs do not support pointer types.

相反，必须将指针移植为IntPtr.您可以使用Marshal类来解析指针.

Instead, pointers must be ported as IntPtr; you can use the Marshal class to resolve the pointer.

因此，您应该编写类似

[StructLayout(LayoutKind.Sequential)]
public unsafe struct mytype
{
    public IntPtr data;
    public IntPtr size;
    public int allocatedSize;
    public int numDimensions;
    public bool canFreeData;
}

检查您的boolean_T类型的大小；您可能需要使用[MarshalAs(...)]属性指定正确的大小.

Check what size your boolean_T type is; you may need to use the [MarshalAs(...)] attribute to specify the correct size.

这篇关于Pinvoke结构的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！