Array of user defined types with external libraries

Question

Thor Andreas 2012-12-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/56769-array-of-user-defined-types-with-external-libraries

Hi

I have a struct defined in my external c-library, e.g. :

struct MyStruct
{
   char a;
   short b;
}

Then I want to pass an array of these structs to my function

function myFunction1(struct MyStruct* str,int sz)
{
    int kk;
    for(kk=0;kk<sz;kk++)
    {
       str[kk].a = 1;
       ...
    }
}

How can I do this using libpointer and libstruct? Can one only use arrays of basix types?

Thank you for any help! Thor Andreas

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Philip Borghesani 2012-12-17

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/56769-array-of-user-defined-types-with-external-libraries#answer_68728

在 MATLAB Online 中打开

If you have at least R2009a then there is limited support for arrays of structures. Create a matlab structure array first then create a 'lib' object from it. This code shows how you can create and index into an array of structures in MATLAB. You should be able to pass either the created libstruct or the pointer to it to your function.

fileroot=fullfile(matlabroot,'extern','examples','shrlib','shrlibsample');
loadlibrary([fileroot,'.',mexext],[fileroot,'.h'])
ms(1).p1=1.1;
ms(2).p1=1.2;
ms(1).p2=2.1;
ms(2).p2=2.2;
ls=libstruct('c_struct',ms);
pls=libpointer('c_struct',ls); % OR pls=libpointer('c_struct',ms)
pls2=pls+1;
pls2.value