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.TH "al_ref_ustr" "3alleg5" "" "Allegro reference manual" ""
.hy
.SH NAME
.PP
al_ref_ustr \- Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include\ <allegro5/allegro.h>

const\ ALLEGRO_USTR\ *al_ref_ustr(ALLEGRO_USTR_INFO\ *info,\ const\ ALLEGRO_USTR\ *us,
\ \ \ int\ start_pos,\ int\ end_pos)
\f[]
.fi
.SH DESCRIPTION
.PP
Create a read\-only string that references the storage of another
ALLEGRO_USTR(3alleg5) string.
The information about the string (e.g.\ its size) is stored in the
structure pointed to by the \f[C]info\f[] parameter.
The new string will not have any other storage allocated of its own, so
if you allocate the \f[C]info\f[] structure on the stack then no
explicit \[lq]free\[rq] operation is required.
.PP
The referenced interval is [\f[C]start_pos\f[], \f[C]end_pos\f[]).
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(3alleg5) to find the byte offsets.
.SH SEE ALSO
.PP
al_ref_cstr(3alleg5), al_ref_buffer(3alleg5)