Example for TES3MP GUI

server.lua

function OnPlayerSendMessage(pid, message)
	local pname = tes3mp.GetName(pid)
	print(pname.."("..pid.."): "..message)
	
	if myMod.OnPlayerMessage(pid, message) == 0 then
		return 0
	end
	
	if message:sub(1,1) == '/' then
		local cmd = (message:sub(2, #message)):split(" ")
        if cmd[1] == "test" then
			if cmd[2] == "1" then
            	tes3mp.MessageBox(pid, 321, "Test Message Box")
			elseif cmd[2] == "2" then
				tes3mp.CustomMessageBox(pid, 2222, "Test Custom Message Box", "Btn1;Btn2;Btn3")
			elseif cmd[2] == "3" then
				tes3mp.InputDialog(pid, 31234, "Test Message Dialog")
			end
			return 0
		end
	end
	return 1
end

function OnGUIAction(pid, idGui, data) -- idGua - any numeric value, data - is string returned from client
	if idGui == 321 then
		print("MessageBox returned")
	elseif idGui == 2222 then
		print("CustomMessageBox returned: "..data)
	elseif idGui == 31234 then
		print("InputDialog returned: "..data)
	end
end