NAME¶

Mat_VarGetStructFieldByIndex — Gets a structure field by field index.

SYNOPSIS¶

#include <matio.h>

matvar_t *
Mat_VarGetStructFieldByIndex(const matvar_t *matvar, size_t field_index, size_t index);

DESCRIPTION¶

The Mat_VarGetStructFieldByIndex() function returns a pointer to the field at 0-relative field index field_index for the structure element at linear index index in the structure variable matvar. The function requires matvar to be a valid structure or object variable.

RETURN VALUES¶

On success, a pointer to the requested field is returned. Otherwise NULL is returned.

EXAMPLES¶

This example gets the second field of the first structure element.

matvar_t *field;

field = Mat_VarGetStructFieldByIndex(matvar, 1, 0);

SEE ALSO¶

Mat_VarGetStructField(3), Mat_VarGetStructFieldByName(3), Mat_VarGetStructFieldnames(3), Mat_VarGetNumberOfFields(3)