Function fltk_sys::table::Fl_Table_Row_visible_cells

pub unsafe extern "C" fn Fl_Table_Row_visible_cells(
    self_: *mut Fl_Table_Row, 
    r1: *mut c_int, 
    r2: *mut c_int, 
    c1: *mut c_int, 
    c2: *mut c_int
)