OF_milliseconds
tick0 = OF_milliseconds();
((OF_milliseconds() - tick0) < tmo_ms));
return OF_milliseconds() / 1000;
int OF_milliseconds(void);
int OF_milliseconds(void);
tick0 = OF_milliseconds();
(OF_milliseconds() - tick0 < tmo_ms));
return OF_milliseconds() / 1000;
int OF_milliseconds(void);