Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_swprintf - This works exactly like swprintf() but doesn't require access to a C runtime.
SYNOPSIS
#include <SDL3/SDL_stdinc.h>
int SDL_swprintf(wchar_t *text, size_t maxlen, const wchar_t *fmt, ...);
DESCRIPTION
Format a wide string of up to maxlen-1 wchar_t values, converting each '%' item with values provided
through variable arguments.
While some C runtimes differ on how to deal with too-large strings, this function null-terminates the
output, by treating the null-terminator as part of the maxlen count. Note that if maxlen is zero,
however, no wide characters will be written at all.
This function returns the number of _wide characters_ (not _codepoints_) that should be written,
excluding the null-terminator character. If this returns a number >= maxlen, it means the output string
was truncated. A negative return value means an error occurred.
Referencing the output string's pointer with a format item is undefined behavior.
FUNCTION PARAMETERS
text the buffer to write the wide string into. Must not be NULL.
maxlen the maximum wchar_t values to write, including the null-terminator.
fmt a printf-style format string. Must not be NULL.
... a list of values to be used with the format string.
RETURN VALUE
Returns the number of wide characters that should be written, not counting the null-terminator char, or a
negative value on error.
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_swprintf(3)