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.TH "al_ref_ustr" "3" "" "Allegro reference manual"
.SH NAME
al_ref_ustr \- Allegro 5 API
.SH SYNOPSIS
.IP
.EX
#include \f[B]<allegro5/allegro.h>\f[R]

const ALLEGRO_USTR *al_ref_ustr(ALLEGRO_USTR_INFO *info, const ALLEGRO_USTR *us,
   int start_pos, int end_pos)
.EE
.SH DESCRIPTION
Create a read\-only string that references the storage of another
ALLEGRO_USTR(3) string.
The information about the string (e.g.\ its size) is stored in the
structure pointed to by the \f[CR]info\f[R] parameter.
The new string will not have any other storage allocated of its own, so
if you allocate the \f[CR]info\f[R] structure on the stack then no
explicit \[lq]free\[rq] operation is required.
.PP
The referenced interval is [\f[CR]start_pos\f[R], \f[CR]end_pos\f[R]).
Both are byte offsets.
.PP
The string is valid until the underlying string is modified or
destroyed.
.PP
If you need a range of code\-points instead of bytes, use
al_ustr_offset(3) to find the byte offsets.
.SH SEE ALSO
al_ref_cstr(3), al_ref_buffer(3)