Function GetACPEncoding

src/backend/utils/error/elog.c:2565–2574

* Get the PostgreSQL equivalent of the Windows ANSI code page. "ANSI" system * interfaces (e.g. CreateFileA()) expect string arguments in this encoding. * Every process in a given system will find the same value at all times. */

 * Every process in a given system will find the same value at all times.
 */
static int
GetACPEncoding(void)
{
	static int	encoding = -2;

	if (encoding == -2)
		encoding = pg_codepage_to_encoding(GetACP());

	return encoding;
}

/*
 * Write a message line to the windows event log