[英]Pinvoke for struct
I have the following struct definition: 我有以下结构定义:
#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*/
and would like to use it in C# via PInvoke. 并希望通过PInvoke在C#中使用它。 The struct is meant to represent a matrix. 结构旨在表示矩阵。 Any C# struct code would be very much appreciated. 任何C#结构代码都将非常感激。 Thanks! 谢谢!
Someone has made an attempt here : 有人在这里尝试过 :
[StructLayout(LayoutKind.Sequential, Size = 1)]
public unsafe struct mytype
{
public double* data;
public int* size;
public int allocatedSize;
public int numDimensions;
public bool canFreeData;
}
but did not get it to work. 但没有得到它的工作。
C# structs do not support pointer types. C#结构不支持指针类型。
Instead, pointers must be ported as IntPtr
; 相反,指针必须移植为IntPtr
; you can use the Marshal
class to resolve the pointer. 您可以使用Marshal
类来解析指针。
Therefore, you should write something like 因此,你应该写一些类似的东西
[StructLayout(LayoutKind.Sequential)]
public unsafe struct mytype
{
public IntPtr data;
public IntPtr size;
public int allocatedSize;
public int numDimensions;
public bool canFreeData;
}
Check what size your boolean_T
type is; 检查boolean_T
类型的大小; you may need to use the [MarshalAs(...)]
attribute to specify the correct size. 您可能需要使用[MarshalAs(...)]
属性来指定正确的大小。
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