FcConfigSetCurrent − Set configuration as default
#include <fontconfig/fontconfig.h>
FcBool FcConfigSetCurrent (FcConfig *config);
Sets the current default configuration to config. Implicitly calls FcConfigBuildFonts if necessary, and FcConfigReference() to inrease the reference count in config since 2.12.0, returning FcFalse if that call fails.