use tk::*;
use tk::cmd::*;
fn main() -> TkResult<()> {
let tk = make_tk!()?;
let root = tk.root();
let s = root.add_ttk_spinbox( "s" -from(1.0) -to(100.0) -textvariable("spinval") )?
.grid(())?;
s.set_state( TtkState::ReadOnly )?;
Ok( main_loop() )
}