chickadee » sdl-base » sdl-delay

sdl-wm-iconify-window ...procedure
sdl-wm-toggle-full-screen ...procedure
sdl-wm-grab-input ...procedure
sdl-get-ticks ...procedure
sdl-delay ...procedure
timer? ...procedure

This is a type predicate for timers. Since there's no way ATM for you to get a reference to a timer, this will always return #f.