lv_display_register_vsync_event

graphics::lvgl

Function lv_display_register_vsync_event 

Source 
pub unsafe extern "C" fn lv_display_register_vsync_event(
    disp: *mut _lv_display_t,
    event_cb: Option<unsafe extern "C" fn(*mut _lv_event_t)>,
    user_data: *mut c_void,
) -> bool