Hi,
From what I can gather, you are trying to use a C/C++ function in MATLAB which uses a struct and are facing issues while using the structure.
Follow the following steps to initialize a C/C++ structure and char* in MATLAB:
(sample.c)
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
typedef struct {
int id;
char* value;
} sampleStruct;
sampleStruct* initStruct(int id, char* value) {
sampleStruct* s = (sampleStruct*)malloc(sizeof(sampleStruct));
s->id = id;
s->value = strdup(value);
return s;
}
sampleStruct* useStruct(sampleStruct* s) {
return s;
}
Compile *.so file of sample.c
gcc -shared -fpic -o sample.so sample.c
Define a sample.h file
typedef struct {
int id;
char* value;
} sampleStruct;
sampleStruct* initStruct(int id, char* value);
sampleStruct* useStruct(sampleStruct* s);
Using the loadlibrary function, load sample.h
loadlibrary('sample.so', 'sample.h')
Call useStruct function which uses a structure from MATLAB using the calllib function in MATLAB.
s_ptr = calllib('sample', 'initStruct', 123, 'sampleStr');
val = calllib('sample', 'useStruct', s_ptr);
disp(val)
I hope this help, thanks!
