A little sudoku-like app for helping first-graders practice addition
draw_status = function()
	local w = App.width('check')
	local x = Safe_width-w-20
	local y = 20+love.graphics.getFont():getHeight()+50
	if x < X+Square_side*2 + 50 then
		-- window is too narrow; hope it's tall
		y = Safe_height/2
	end
	button(Buttons, 'check', {x=x, y=y, w=w+10, h=love.graphics.getFont():getHeight()+10, bg={r=0.6, g=0.8, b=0.6},
		icon = function(p)
			App.color{r=0, g=0, b=0}
			love.graphics.print('check', p.x+5, p.y+5)
		end,
		onpress1 = function()
			Status = check_status()
		end,
	})
	y = y+love.graphics.getFont():getHeight()
	if Status == 'yes' then
		w = App.width('yes!')
		App.color{r=0, g=0.6, b=0}
		love.graphics.print('yes!', Safe_width-w-10, y+10)
	elseif Status == 'no' then
		w = App.width('sorry')
		App.color{r=1, g=0, b=0}
		love.graphics.print('sorry', Safe_width-w-10, y+10)
	end
end