FcConfigSetRescanInterval (3) - Linux Manuals
FcConfigSetRescanInterval: Set config rescan interval
NAME
FcConfigSetRescanInterval - Set config rescan interval
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcConfigSetRescanInterval (FcConfig *config, int rescanInterval);
DESCRIPTION
Sets the rescan interval. Returns FcFalse if the interval cannot be set (due to allocation failure). Otherwise returns FcTrue. An interval setting of zero disables automatic checks. If config is NULL, the current configuration is used.