pls what is grid hide fucntion ?

wow very very good tut
thank you ~

viewport.setGridVisibility

thank you ~ well done
pls 1 more questinon

there is not "adaptive degradation off function " in the manual ~
pls help me again

I'm not sure if there is a function in max to do it but you can sendMessage to change checkbutton state

(
	-- 1. find a hwnd of this button:

	local hwnd
	local fSPBottomContainer = false

	for o in windows.getChildrenhwnd #max where hwnd == undefined do (
		if not fSPBottomContainer and o[4] == "CustToolbar" and o[5] == "StatusPanelBottomContainer" do fSPBottomContainer = true
		
		if fSPBottomContainer and o[4] == "CustButton" and o[5] == "" do hwnd = o[1]
	)

	-- 2. sendMesage to change state:

	local VK_RETURN = 0x000D
	local WM_SETFOCUS = 0x007
	local WM_CHAR 	= 0x0102
	
	windows.sendMessage hwnd WM_SETFOCUS 0 0
	windows.sendMessage hwnd WM_CHAR VK_RETURN 0
	
	ok
)

Hope it helps,
Pixamoon